Anatomy & Physiology
5th Edition
ISBN: 9780321861580
Author: Marieb, Elaine N.
Publisher: Pearson College Div
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Chapter 13, Problem 31RQ
Summary Introduction
Introduction:
There are three parts in the ear: external ear, middle ear, and inner ear. The inner ear contains several receptors that are important for equilibrium. They can maintain static as well as dynamic equilibrium in response to different body movements. Macula is one such equilibrium receptor, which is located in the vestibule portion of the inner ear.
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Three small bones, collectively called ______, articulate to form a lever system that amplifies and transmits the vibratory motion of eardrum to fluids of inner ear via the oval window.
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auditory ossicles
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semicircular canals
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In the cochlea, the auditory receptors are hair cells (stereocilia) that project into a gelatinous membrane called the _______ membrane.
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___ is a type of sensorineural deafness that occurs commonly in people by the time they are in their sixties, and it results from a gradual deterioration and atrophy of the spiral organ that leads to a loss in ability to hear high tones and speech sounds.
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which statements are true about the Auditory Structures and their Functions
a. The middle ear is connected to the mastoid air cells.
b. The inner ear has three parts: the semicircular canals; the vestibule, which contains the utricle and the saccule; and the cochlea.
c. The cochlea is a circular-shaped canal within the temporal bone.
d. The cochlea is divided into two compartments by the vestibular and basilar membranes. The scala vestibuli and scala tympani contain perilymph. The cochlear duct contains endolymph and the spiral organ (organ of Corti).
which statements are true about the Auditory Structures and Functions
a. The external ear consists of the auricle and external acoustic meatus.
b. The middle ear connects the external and inner ears. The tympanic membrane is stretched across the external acoustic meatus.
c. The malleus, incus, and stapes connect the tympanic membrane to the oval window of the outer ear.
d. The auditory tube connects the middle ear to the pharynx and functions to equalize pressure.
Chapter 13 Solutions
Anatomy & Physiology
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