Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 14, Problem 3CT
Jill is diagnosed with sensorineural deafness, a disorder in which sound waves are transmitted normally to the inner ear but they are not translated into neural signals that travel to the brain. Sometimes the cause is a problem with the auditory nerve, but in Jill’s case it has to do with a problem in the inner ear itself. Where in the inner ear is the disruption most likely to be located?
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Milo and Garfield are two friends who have acquired hearing loss, but the cause of hearing loss in Milo is different from that in Garfield. Milo has a conductive hearing loss. He can hear, but not clearly and loudly. The doctor has told Milo that calcium has built up on the bones in his middle ear interfering with their movements. Garfield has neural hearing loss. The doctor has told Garfield that he cannot hear because the auditory nerve cannot transmit electrical impulses from receptors in his inner ear to his brain. By completing the following tasks, help Milo and Garfield understand how their ear works and why they have difficulty hearing sounds.
E. Draw and label a diagram showing the position of the bones in the middle ear.
F. Explain the function of the bonesinconducting sound.
G. Draw and label a diagram showing the inner ear, the position of receptors and the auditory nerve.
Grandpa can't ever seem to hear what his little granddaughters say. He also can't hear that high-pitched whine in the Subaru engine that everyone else seems to hear. You suspect that grandpa
has too much ear wax built up in his external auditory canal, and therefore has developed conduction deafness
has damage to the vestibulocochlear nerve
has damaged either the utricle or the saccule, though it will be hard to tell which one without further testing
has damaged the hair cells closest to the oval window
has "selective" hearing loss, because the granddaughters are always trying to get him to play with them when he's tired, and he doesn't want to work on that darned car anymore either.
Presbycusis is an age-related hearing loss affecting individuals over the age of 65. Many affected
individuals have difficulty understanding words because, although they may be able to hear the
sound, they are unable to distinguish the exact words. This hearing loss is most noticeable at
higher frequencies.
Which of the following statements correctly describes an individual suffering from presbycusis?
Select one:
a. Individuals with presbycusis have damaged hair cells at the base of the cochlea, which is
closest to the oval window.
b. Increasing the volume of higher frequency sound allows individuals affected with
presbycusis to hear better.
O c. Individuals with presbycusis have damaged hair cells at the apex of the cochlea, which is
farthest from to the oval window.
Od. Decreasing the amplitude of lower frequency sound allows individuals affected with
presbycusis to hear better.
Chapter 14 Solutions
Human Biology (MindTap Course List)
Ch. 14 - When a receptor cell detects a specific kind of...Ch. 14 - Name six categories of sensory receptors and the...Ch. 14 - How do somatic sensations differ from special...Ch. 14 - Explain where free nerve endings are located in...Ch. 14 - Prob. 5RQCh. 14 - What are the stimuli for taste receptors?Ch. 14 - How do smell signals arise and reach the brain?Ch. 14 - Label the parts of the ear:Ch. 14 - In the ear, sound waves cause the tympanic...Ch. 14 - Label the parts of the eye:
Ch. 14 - How does the eye focus the light rays of an image?...Ch. 14 - A __________is a specific form of energy that can...Ch. 14 - Awareness of a stimulus is called a ________.Ch. 14 - ____________ is understanding what particular...Ch. 14 - A sensory system is composed of __________. a....Ch. 14 - ___________detect energy associated with changes...Ch. 14 - Detecting substances present in the body fluids...Ch. 14 - Which of the special senses is based on the...Ch. 14 - Rods differ from cones in the following ways: a....Ch. 14 - The outer layer of the eye includes...Ch. 14 - The inner layer of the eye includes the...Ch. 14 - Your visual field is ______________. a. a...Ch. 14 - Match each of the following terms with the...Ch. 14 - Prob. 1CTCh. 14 - Prob. 2CTCh. 14 - Jill is diagnosed with sensorineural deafness, a...Ch. 14 - Larry goes to the doctor complaining that he cant...Ch. 14 - In a rock climber like the man pictured in Figure...
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