To create a man, one must grow up. To create a boy, one must be born. Life's cycle is quick, but slow when we are young.
Central Nervous System: Includes the brain and spinal cord; controls most bodily functions.
Peripheral Nervous System: Includes all nerves outside the brain and spinal cord.
Somatic System: Controls voluntary movements of skeletal muscles.
Autonomic System: Manages automatic functions like heartbeat and digestion.
Sympathetic System: Activates the body and expends energy (usually during stress).
Parasympathetic System: Calms the body, conserving energy and slowing the heartbeat.
Endocrine System: Releases hormones to regulate hunger, reproduction, and long-term changes like puberty.
Pituitary Gland: The “master gland” that controls growth and is directed by the brain to release hormones that influence other glands.
Adrenal Glands: Release stress hormones like adrenaline.
Medulla: Controls basic functions like breathing and heartbeat; part of the brainstem.
Cerebrum: Responsible for higher-order functions like thinking and voluntary movement.
Cerebellum: Helps with balance and coordination; processes sensory input.
Limbic System: Handles emotions and basic drives.
Amygdala: Controls emotions like fear.
Hypothalamus: Manages survival instincts: fight, flight, hunger, and reproduction.
Cerebral Cortex: Thin layer of neurons responsible for higher-level thinking and sensory processing.
Frontal Lobe: Handles planning, decision-making, and voluntary movements.
Motor Cortex: Controls voluntary movements.
Sensory Cortex: Processes sensory input and relays it to the body.
Parietal Lobe: Processes touch and body position.
Occipital Lobe: Processes visual information.
Temporal Lobe: Processes sound and auditory information.
Glial Cells: Support and protect neurons; act as the glue of the brain.
Acetylcholine: Enables muscles, learning, and memory.
Dopamine: Enables movement, learning, and emotion
Serotonin: Sleep, arousal, hunger, mood
GABA: Inhibitor neurotransmitter, it stops another neurotransmitter from bonding to the dendrite
Glutamate: Involved in memory; excitatory
Endorphins: Natural opium of the body; a painkiller
In the property preservation industry, speed and accuracy are essential when managing complex tasks such as documenting cubic yard measurements (e.g., CYD=3.14 * r^2 * h for cylindrical containers), maintaining compliance with HUD standards, and preparing detailed invoices. Professionals must provide precise evidence for every load progression, including clear, labeled, time-stamped photos of containers at empty, 25%, 50%, 75%, and 100% full, with dimensions such as length, width, and height included for all hauling equipment. Failure to properly label case numbers (e.g., Case#123@Address), or to provide accurate dump receipts, can lead to severe payment deductions or rejection of claims entirely. Additionally, vendors must ensure that debris is free from prohibited items, such as vegetation, oversized limbs, or unapproved appliances, and that it is tightly compacted to minimize void spaces—overloading or poor compaction is unacceptable. Emergency situations like mold greater than 5 square feet or flood depths exceeding one foot require immediate reporting, with precise documentation submitted promptly. Multitasking is critical, as professionals must juggle multiple responsibilities, including cross-verifying compliance with regulations, resolving escalations, and completing work on time, all while adhering to strict deadlines. Missteps in any aspect of this process—whether in measurements, documentation, or communication—can result in significant financial penalties. The ability to type rapidly and flawlessly without glancing at the keyboard is a key skill for success in this demanding and detail-oriented field.
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In the property preservation industry, speed and accuracy are essential when managing complex tasks such as documenting cubic yard measurements (e.g., CYD=3.14 * r^2 × h for cylindrical containers), maintaining compliance with HUD standards, and preparing detailed invoices. Professionals must provide precise evidence for every load progression, including clear, labeled, time-stamped photos of containers at empty, 25%, 50%, 75%, and 100% full, with dimensions such as length, width, and height included for all hauling equipment. Failure to properly label case numbers (e.g., Case#123@Address), or to provide accurate dump receipts, can lead to severe payment deductions or rejection of claims entirely. Additionally, vendors must ensure that debris is free from prohibited items, such as vegetation, oversized limbs, or unapproved appliances, and that it is tightly compacted to minimize void spaces—overloading or poor compaction is unacceptable. Emergency situations like mold greater than 5 square feet or flood depths exceeding one foot require immediate reporting, with precise documentation submitted promptly. Multitasking is critical, as professionals must juggle multiple responsibilities, including cross-verifying compliance with regulations, resolving escalations, and completing work on time, all while adhering to strict deadlines. Missteps in any aspect of this process—whether in measurements, documentation, or communication—can result in significant financial penalties. The ability to type rapidly and flawlessly without glancing at the keyboard is a key skill for success in this demanding and detail-oriented field.
In the property preservation industry, speed and accuracy are essential when managing complex tasks such as documenting cubic yard measurements (e.g., CYD=3.14 × r² × h for cylindrical containers), maintaining compliance with HUD standards, and preparing detailed invoices. Professionals must provide precise evidence for every load progression, including clear, labeled, time-stamped photos of containers at empty, 25%, 50%, 75%, and 100% full, with dimensions such as length, width, and height included for all hauling equipment. Failure to properly label case numbers (e.g., Case#123@Address), or to provide accurate dump receipts, can lead to severe payment deductions or rejection of claims entirely. Additionally, vendors must ensure that debris is free from prohibited items, such as vegetation, oversized limbs, or unapproved appliances, and that it is tightly compacted to minimize void spaces—overloading or poor compaction is unacceptable. Emergency situations like mold greater than 5 square feet or flood depths exceeding one foot require immediate reporting, with precise documentation submitted promptly. Multitasking is critical, as professionals must juggle multiple responsibilities, including cross-verifying compliance with regulations, resolving escalations, and completing work on time, all while adhering to strict deadlines. Missteps in any aspect of this process—whether in measurements, documentation, or communication—can result in significant financial penalties. The ability to type rapidly and flawlessly without glancing at the keyboard is a key skill for success in this demanding and detail-oriented field.
In the Pr0perty Pr3servat!0n 1ndustry, compl!ance w!th mult!lay3red guid3lines is param0unt, requiring att3nt!on-to-detail at 100% capacity and seamless execution of tasks such as w1nter1zat10n, debris removal (e.g., 25 cubic yards per truck), lawn maint3nance (minimum 18" encroachment rule), and secur1ng vacant prop3rt!es using HUD-appr0ved measures (e.g., 6' x 8' plywood for board-ups). VENDORS MUST ADHERE TO STRICT PHOTO DOCUMENTATION, including b3f0re-and-after shots (TIME-STAMPED w/ dd/MM/yyyy HH:mm:ss format) and load progression using placards labeled EMPTY, 25%, 50%, 75%, 100% FULL! FAILING to mark receipts with Case#0001@Address results in $$$ deductions or total R3JECTION! For accurate invoicing: Line-itemize each l0ad w1th CYD (Cubic Yardage), l3ngth (L), w1dth (W), and height (H); miscalculations (e.g., missing 0.5 CYD) may l3ad t0 P3nalty#007. HANDL3R MUST inspect d3bris for PROHIBITED ITEMS (e.g., b!ohazards, 9' tre3 l1mbs, 3lectr!cal w1res) while cross-ver!fy!ng compl!ance via HUD’s checklist! Emerg3ncy scenaR10s such as MOLD (≥5 sq.ft.), FLOODING (@ Basement Depth: >1.2 ft.), or STRUCTURAL RISKS (!!CRITICAL!!) demand 24/7 REP0RT!NG t0 CLIENT! Mult!tasking becomes NON-NEGOTIABLE when juggling escalations, communicat1on via multi-channel port@ls, and ensuring SAME-DAY complet!on despite ALLOCATION OF L!MITED R3SOURCES!!! REM3MBER: 1 ERROR 1N DOCUM3NTATI0N = 0% PAYM3NT!!! ***SYST3MATIC WORK ONLY!***
Dos calculadoras científicas distintas pueden arrojar resultados diferentes de un mismo enunciado. Generalmente se presentan en operaciones con divisiones /.
Utiliza los (paréntesis) en exceso. Las divisiones son prácticamente fracciones y se visualizan mejor si la calculadora permite su escritura; la idea es visualizar y ubicar bien cuál es el numerador (al que dividen) y cuál es el denominador (el que divide).
Veamos un ejemplo de una operación que normalmente se escribiría así: 60/3*(3+1). ¿Cuál es el numerador/denominador aquí?
Una forma de interpretarlo es que al 60 le están dividiendo todo lo demás, es decir, numerador=60 y denominador=(3*(3+1)). Su escritura en la calculadora sería 60/(3*(3+1))
O al 60 sólo lo divide el 3 y el resultado se multiplica en lo demás: numerador=60 dividido por denominador=3, el resultado se multiplica por (3+1). Su escritura en la calculadora sería (60/3)*(3+1)
En la primera da 5 y el la segunda da 80.
La "regla" prioriza la multiplicación * y la división / sobre la suma + y la resta -; pero no hay jerarquía entre la multiplicación * y la división /.
Saber cuál es el planteamiento "correcto" dependerá de dónde salió la operación.
An honor procession flanks Lord Tywin's casket as it heads west, led by many of the Lannister bannermen. Jaime Lannister falls in with his uncle Kevan, and they discuss the raid on Saltpans. Jaime cautions his uncle not to try and take on Sandor Clegane or Beric Dondarrion, and that he would have made a good Hand. Kevan rejects him coolly, and lets Jaime know he knows about the relationship of the twins, Jaime and Queen Cersei Lannister.
As Jaime returns to King's Landing, he looks upon the encamped Lannister army, which will soon board the Redwyne fleet to lay siege to Dragonstone. He finds his sister in her solar as Grand Maester Pycelle delivers news that Ser Bronn has named Lollys's bastard newborn "Tyrion". Jaime realizes that his sister may try to have Bronn killed for this jape, and he recalls the look on her face the night of Tommen's wedding when the Tower of the Hand was aflame.
This called to mind the madness of King Aerys and the way he would become aroused by fire. Jaime recalls Aerys's rape of his wife the evening he had Lord Chelsted burned alive. Jaime had the guard of the queen's bedchamber when she was screaming for her husband to stop. When Jaime said that they were sworn to protect her too, his partner that night, Ser Jonothor Darry, replied, "We are, but not from him."
Jaime asks to speak with Cersei alone, and asks her why she keeps Lady Taena around all the time, knowing that she is a spy for Margaery. Cersei responds that Taena is more her spy, considering that the Queen Regent can do more for the Merryweather family. Jaime cautions that she doesn't truly know the woman, but Cersei remarks that she may make Taena's husband the Hand. After Jaime asks her about the rumor that she plans to name Aurane Waters her new master of ships, he recommends that she would be better off naming Paxter Redwyne.
But Cersei will not put any Tyrell vassals on her small council. Cersei also defends her choice of Qyburn, a disgraced and twisted maester, to join the council. Cersei's growing paranoia and brutality are becoming more evident and Jaime retorts, "You are seeing dwarfs in every shadow and making foes of friends. Uncle Kevan is not your enemy. I am not your enemy." However, Cersei throws him out of her solar in fury.
In the White Sword Tower, Jaime speaks with Ser Loras Tyrell, asking him what he knows of certain famous Kingsguard. Loras is well-versed, but when the Lord Commander mentions some lesser-known Kingsguard, the Knight of Flowers does not recognize their names. Jaime points out that all of them served well, perhaps even better than the famous knights.
Loras remarks that the great Kingsguard knights will always be remembered as heroes, but Jaime reminds him that the most infamous will also be remembered. And then there are those who are not easily classified, of which he offers as an example Criston Cole, the Kingmaker.
Roses fall to my feet
And I fall to my knees
Why is everything so dark and cold like night?
Is this the way I shall die?
Must I die of a broken mind?
Wanting to dream of Kinich when I can't
Never being able to understand
Must this be my fate?
Never being able to say
Say
Say
Say
I look at my gravestone
And I notice I'm alone
I wish I knew if anyone cared
I never saw them there
When I died of a broken mind
Still wanting to dream of Kinich
When I don't even understand me
Is this what the world hid from me?
The fact that if I dream of Kinich
I'm at peace
But if I'm left
To rest
Is dreaming of Kinich really that bad
So bad I can't possibly understand
Why am I like a wilting flower in the night
Why wasn't my sacrifice so heartbreaking?
Why is my life only draining?
Why is this la chanson de la fin d'une vie?
The end of dreaming of Kinich
Kinich
Kinich
Kinich
Kinich
I will be fine as long as I can sleep
In peace
And dream of Kinich
Son nom est Lyney, un grand magicien
Sa sœur Lynette, son assistante
Je n'arrive toujours pas à comprendre pourquoi
Il a dû me quitter, mais pourquoi riez-vous ?
Fontaine
Fontaine
Fontaine
Fontaine
Il est tout mon monde et bien plus que ça
Seul, je crie son nom quand les souvenirs reviennent
Et puis tout s'effondre quand il est parti
J'adorerais le dire à Lyney mais je n'ose pas
Celui qui me fait
Tournant dans le vide, le vide
Tournant dans le vide, le vide
Tourner dans le vide, ça me fait tourner
Dans le vide, vide, vide
Tourne, tourne dans le vide
Tourner dans le vide, ça me fait tourner
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
Je rêve encore de Fontaine
I will type Fontaine again because there is a line in French that I wish to not type out. There are other lines I will skip because of this. That is why I have been seeing Fontaine a lot.
C'est juste un souvenir, une larme du passé
Coincé dans mes yeux, qui ne veut pas s'en aller
Oh non, ne ris pas
Toi qui ne sais pas
Toutes mes larmes
Ils me disent d'abandonner Lyney
Il était tout mon monde et bien plus que ça
J'espère le voir dans l'au-delà
Aide-moi, tout s'effondre depuis qu'il n'est plus là
Le sais-tu, Lyney ? Lynette ? Freminet ?
qu'est-ce que tu me fais
Tourner dans le vide, le vide ?
Tourner dans le vide, le vide ?
Tournant dans le vide, tu me fais tourner
Dans le vide, vide, vide
Tourne, tourne dans le vide
Tourner dans le vide, ça me fait tourner
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
Ça me fait tourner dans le vide
tourner dans le vide
tourner dans le vide
Ça me fait tourner dans le vide
tourner dans le vide
tourner dans le vide
tourner dans le vide
Ça me fait tourner, oh, Lyney
tourner dans le vide au Palais Mermonia
I didn’t know that when I first saw him
Later in life, I would love him
It’s been over a year, and I still can’t get over him
Why’s it him?
I didn’t know he had that much sorrow inside of him
I don’t know that even I would cry for him
I never expected to feel sorry for him
Why’s it him?
Now that I know you're only a liar
I don't care for you anymore
Now that I know your one desire
Is to never remember Focalors
Some people think that human needs for farmland, housing, and industry are more important than saving land for endangered animals. Do you agree or disagree with this point of view? Why or why not?
Model Answer:
As human population is significantly rising every year, people's requirements are increasing too. We need more food, more machines, more place to live. As a result of this people need more land to satisfy their requirements. We cultivate and irrigate more and more land to plant vegetables, build new buildings, airports, roads, etc. I think sometimes we forget that we are not alone on this planet. I have to disagree with those people who think that human needs are more important than saving land for endangered animals. I base my opinion on the following points.
First of all, as I already mentioned, we are not alone on this planet. A few centuries ago we were the part of wild nature. I think we need to remember this fact and respect all creatures around us.
Second of all, I believe that we all need to think of the problem of overpopulation. The human population is dramatically increasing and we have to do something about it. From my opinion, every family should have no more than two children. It will help to stop the growth of population, decrease human needs for farmland, housing and industry.
In conclusion, I think it is a very topical question nowadays. My point is that all people should answer this question and find the solution.
The earth is being filled with waste material such as plastic bags and other rubbish. Is this really happening? What are some solutions to this problem?
Model Answer:
Over the past few decades, the increasing amount of industrial wastes and household garbage has become a major problem in many countries. People have questioned what caused this problem and what can be done to improve the situation. In my opinion, two of the most critical causes of this waste material problem are the increased consumption and a shortage of space for landfill.
To begin with, modern lifestyle has contributed greatly to the increasing amount of waste and garbage we produce everyday. In other words, we have turned into a materialistic and mass-consumption society where we use more and throw away more than ever before. Moreover, countries are running out of space to store garbage and waste material. In fact, securing land for waste disposal raises controversies in many countries.
To solve this intractable problem, every citizen needs to participate in producing less garbage. For example, we can bring our own personal shopping bags instead of using plastic bags provided by stores and shops. Besides, the government can enforce stricter laws on companies to use biodegradable packaging or use recycled material. Indeed, this alone can eliminate much of the waste which is sent to at land fills. Companies can also contribute by developing new raw material which is recyclable and will ultimately lead to less garbage. One good example of this is that tire companies develop new tires for cars which are not made of rubber but of new biodegradable material.
As discussed above, individuals, business and the government can share the responsibility to reduce the amount of waste material and to save the earth. I hope that in the future our offspring will be better off with the well-preserved environment.
Tử cung ngã trước, DAP d=55mm, Nội mạc d= 05mm.
Tử cung có nhiều khối echo kém, giới hạn rõ, khối lớn nhất ở mặt sau d=55*13*25mm (L2–5 theo FIGO).
Cấu trúc không đồng nhất.
Buồng trứng trái có nang echo kém đồng nhất dạng kính mờ d= 55*25*33mm, một thuỳ, bờ đều, không phần đặc, color score 2.
Cạnh buồng trứng phải có cấu trúc phản âm hỗn hợp d= 23*24mm, di động độc lập với buồng trứng, có ít mạch máu nuôi.
Kết luận: Khối phản âm hỗn hợp cạnh buồng trứng phải + Nang lạc nội mạc buồng trứng trái + Đa nhân xơ tử cung
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Issues identified in the letter
One designated safety officer
Safety officers take responsibility for receiving information from across the business about safety concerns and then passing those
concerns on to the relevant senior people so that action is taken, and the issues are resolved. It seems unlikely in a site like this
one where operations are complex, that one safety officer is adequate, and the Highland Health and Safety Regulatory Body
(HHSRB) has seen fit to raise the matter in their letter.
It is possible that an inadequate number of designated safety officers might cause the HHSRB to impose fines and penalties. They may even shut down the site until the matter is resolved. The impact of such actions on reputation are significant and it could affect the validity of DLE-pros insurance policy. Hence DLE-pro and Rotomyne need to fix this problem as soon as possible.
The safety officer being the production manager
It may not be an appropriate choice to have the production manager taking on the role of designated safety officer. Given their likely seniority, people may feel reluctant to raise matters for their attention fearing that a harsh response may ensue for them or their colleagues. A less senior person might be a better, more approachable choice.
Reactive repair work
It is a positive point that the HHSRB have noted that there is adequate evidence of reactive repair work.
Maintenance work
It is unacceptable for there to be no audit trail or evidence that maintenance work has been completed as per requirements.
Although direct lithium extraction could be perceived to be more environmentally friendly than hard rock and brine mining this is still
a hazardous industry to work in and high standards of maintenance on key machinery remains of paramount importance to the
safety of operations. We need to follow this up firstly to establish if the maintenance is being done “regularly” as stated and is just
not being documented, or whether it is not being done properly at all.
If accidents or other health and safety issues occur, DLE-pro will find it difficult to defend itself without evidence of suitable
maintenance work which could lead to significant liabilities and reputational damage.
Lack of training
Again, in an industry like this which is hazardous and complex, a lack of training is unacceptable and could lead to accusations of
negligence. The statement that there is “no better way to learn that being thrown in at the deep end” is irresponsible and this is
another area that Rotomyne needs to ensure that DLE-pro fixes as a matter of priority.
How internal audit may assist Rotomyne to ensure safety procedures at DLE-pro are appropriate
Obtaining a copy of DLE-pros safety procedures
The first thing for internal audit to do is obtain a copy of the DLE-pro safety procedures so they can see what processes and
procedures DLE-pro staff should be following on a day-to-day basis.
Internal audit can then cross compare this to the equivalent Rotomyne document (which we know DLE-pro have been provided) making note of and similarities and differences. Account needs to be taken for the fact that DLE mining is different from the mining that Rotomyne normally undertakes but it is still valid to see if the depth and breadth of procedures is as comprehensive as those
used at Rotomyne.
The review allows the internal audit team to highlight any areas where they feel procedures may be significantly different or any
areas where they feel they are not adequate or concerning. They can then raise these areas with the staff at DLE-pro.
Internal audit site visit
Internal audit may then wish to visit DLE-pro, meeting with the relevant managers and supervisors from the different areas of
operation to discuss the implementation of safety procedures in their area and to explore in more detail the areas they have
highlighted as concerning especially noting the issues the HHSRB have raised in their report for attention.
Confirming shortcomings
The visit is likely to allow the internal audit department to confirm the shortcomings identified in the HHSRB report and raise any further matters revealed. This work then supports a discussion with the senior management team with the aim of developing procedures to improve things collaboratively. The internal audit team may need to emphasise the fact that now that DLE-pro is part of the Rotomyne group they are expected to operate in accordance with Rotomyne health and safety framework (albeit adjusted for the specifics of DLE mining).
Circulate new processes
The internal audit department can assist with setting up a training schedule to ensure that all new processes are communicated effectively to the relevant staff. They can task DLE-pro with creating the content for the training and then check it seems appropriate, putting controls in place to monitor participation and completion.
Follow up visit
It would be useful for internal audit to perform a follow up visit so that they can ensure that the proposed changes have been
addressed and implemented. They should notify the senior management team in advance of this visit so that they have the motive to resolve all raised issues ahead of them coming. During the follow up it would be appropriate for the internal audit team to ask for evidence of the new procedures being followed and to observe key controls in operation. Internal audit will then provide the senior management team with feedback relating to the visit and recommendations on fixing any remaining shortcomings.
Hearing, or audition, is the transduction of sound waves into a neural signal that is made possible by the structures of the ear.
The external ear consists of the auricle (visible, external component of the ear) sometimes referred to as the pinna, ear canal, and tympanic membrane. The C-shaped curves of the auricle direct sound waves toward the auditory canal. The canal enters the skull through the external auditory meatus (opening) of the temporal bone. At the end of the auditory canal is the tympanic membrane, which vibrates after it is struck by sound waves.
The middle ear consists of the ossicles, (three small bones in the middle ear that transmit sound vibrations from the eardrum to the inner ear) oval window, (opening between the middle ear and the vestibule, which is covered by a membrane) and tympanic membrane. The three ossicles are the malleus, incus, and stapes, which are Latin names that roughly translate to hammer, anvil, and stirrup. The malleus is attached to the tympanic membrane and articulates with the incus. The incus, in turn, articulates with the stapes. The stapes is then attached to the inner ear, where the sound waves will be transduced into a neural signal.
Vibrations of the ossicles travel through the oval window, moving fluid in a wave-like motion. The frequency of the fluid waves matches the frequencies of the sound waves. The middle ear is connected to the pharynx through the Eustachian tube, which helps equilibrate air pressure across the tympanic membrane. The tube is normally closed but will pop open when the muscles of the pharynx contract during swallowing or yawning.
The inner ear is often described as a bony labyrinth, as it is composed of a series of canals embedded within the temporal bone.
It consists of the cochlea (a fluid-filled, spiral-shaped cavity found in the inner ear) that is responsible for hearing and the vestibule (central part of the bony labyrinth ) that is responsible for balance. The neural signals from these two regions are relayed to the brain stem through separate fiber bundles. However, these two distinct bundles travel together from the inner ear to the brain stem as the vestibulocochlear nerve. Sound is transduced into neural signals within the cochlear region of the inner ear, which contains the sensory neurons of the spiral ganglia. (sends axons into the cochlear nerve) These ganglia are located within the spiral-shaped cochlea of the inner ear. The cochlea is attached to the stapes through the oval window.
Scala vestibuli and scala tympani run along both sides of the cochlear duct. The cochlear duct contains several organs of Corti, (organ made of sensory epithelium) which transduce the wave motion of the two scalas into neural signals. The organs of Corti lie on top of the basilar membrane, which is the side of the cochlear duct located between the organs of Corti and the scala tympani. As the fluid waves move through the scala vestibuli and scala tympani, the basilar membrane (analyzes and translates vibration frequencies) moves at a specific spot, depending on the frequency of the waves. Higher frequency waves move the region of the basilar membrane that is close to the base of the cochlea. Lower frequency waves move the region of the basilar membrane that is near the tip of the cochlea.
The cochlea encodes auditory stimuli for frequencies between 20 and 20,000 hertz (Hz), which is the range of sound that human ears can detect. The unit of Hz measures the frequency of sound waves in terms of cycles produced per second. Frequencies as low as 20 Hz are detected by hair cells at the apex, or tip, of the cochlea. Frequencies in the higher ranges of 20 kHz are encoded by hair cells at the base of the cochlea, close to the round and oval windows. Most auditory stimuli contain a mixture of sounds at a variety of frequencies and intensities (represented by the amplitude of the sound wave). The hair cells along the length of the cochlear duct, which are each sensitive to a particular frequency, allow the cochlea to separate auditory stimuli by frequency, just as a prism separates visible light into its component colors.
