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Ch. 15 The Special Senses
Hoehn - Marieb Human Anatomy & Physiology, 12th edition
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Not the one you use?Change textbook
All textbooksHoehn, Haynes, Abbott 12th EditionCh. 15 The Special SensesProblem 14
Chapter 15, Problem 14

Otoliths (ear stones) are
a. A cause of deafness
b. A type of hearing aid
c. Important in equilibrium
d. The rock-hard petrous part of the temporal bones

Verified step by step guidance
1
Step 1: Understand the term 'otoliths'. Otoliths are small calcium carbonate crystals located in the inner ear, specifically within the utricle and saccule of the vestibular system.
Step 2: Recognize the function of otoliths. They play a crucial role in detecting linear acceleration and head position relative to gravity, which are essential for maintaining balance and equilibrium.
Step 3: Evaluate each option based on the function and nature of otoliths: (a) Cause of deafness - otoliths are not related to hearing loss; (b) Type of hearing aid - otoliths are biological structures, not devices; (c) Important in equilibrium - this aligns with their role in balance; (d) The rock-hard petrous part of the temporal bones - this refers to a bone structure, not otoliths.
Step 4: Conclude that the correct understanding of otoliths is that they are important in equilibrium, as they help the body sense position and movement.
Step 5: Summarize that otoliths are not related to hearing aids or deafness, nor are they bone structures, but are essential components of the vestibular system involved in balance.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Otoliths and Their Function

Otoliths are tiny calcium carbonate crystals located in the vestibular system of the inner ear. They play a crucial role in detecting linear acceleration and head position relative to gravity, helping maintain balance and spatial orientation.
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Equilibrium and the Vestibular System

The vestibular system, including the otolith organs (utricle and saccule), is responsible for sensing motion and equilibrium. It sends signals to the brain to help coordinate balance and posture during movement.
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Misconceptions about Otoliths

Otoliths are not related to hearing aids, deafness, or the petrous part of the temporal bone. Understanding what otoliths are and their specific role prevents confusion with other ear structures or devices.
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Related Practice
Textbook Question

The structure that allows pressure in the middle ear to be equalized with atmospheric pressure is the

a. Pinna

b. Pharyngotympanic tube

c. Tympanic membrane

d. Oval window

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Textbook Question

How do rods and cones differ functionally?

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Textbook Question

Which of the following statements does not correctly describe the spiral organ?

a. Sounds of high frequency stimulate hair cells at the basal end.

b. The 'hairs' of the receptor cells are embedded in the tectorial membrane.

c. The basilar membrane acts as a resonator.

d. The more numerous outer hair cells are largely responsible for our perception of sound.

Textbook Question

Pitch is to frequency of sound as loudness is to

a. Quality

b. Intensity

c. Overtones

d. All of these