Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 40.8, Problem 1TC
Retinal implants have boon developed to provide limited vision for people who have become blind due to retinitis pigmentosa or macular degeneration, in which the photoreceptors degenerate but many of the ganglion cells survive. Compare the structure of the retina and the cochlea. Based on what you know about cochlear implants, what would be the general guiding principles for designing a retinal implant?
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Ototoxic drugs are drugs that may damage the cochlea, auditory nerve and/or the vestibular system of the ear. The damage caused is usually temporary and symptoms improve once the patient stops taking the drug. However, in some patients, the damage is permanent. Damage to the cochlea is the most common problem associated with these drugs.
The reason that hearing loss results when the cochlea is damaged is:
Select one:
a. The bones in the ear do not amplify or increase the sound vibrations.
b. The eardrum cannot transmit vibrations from sound waves to the malleus.
c. The Eustachian tube remains open.
d. Hair cells within the damaged cochlea do not bend preventing the transmission of an electrical signal to the auditory nerve.
Dizziness and vertigo are symptoms of fluid build up in the cochlea and inner ear. Receptors for hearing are called hair cells and are only stimulated upon movement. Discuss how the increase in fluid can lead to a malfunction in the receptors leading to dizziness and inability to hear well. You will need to discuss the pathway of hearing using the tympanic membrane, malleus, incus, stapes, round window, oval window, hair cells and vestibulocochlear nerve in your response.
The inner ear is responsible for both hearing and balance. One of the diseases affecting the inner ear is Meniere's disease. Affected individuals often experience vertigo, among other symptoms. Vertigo is a sensation that the surrounding is spinning or swaying in the absence of any body movement.
Which of the following rows correctly identifies the affected structure and process in individuals experiencing vertigo?
Select one:
a.
Structure
Process
Semicircular canals
Rotational equilibrium
b.
Structure
Process
Semicircular canals
Gravitational equilibrium
c.
Structure
Process
Organ of Corti
Gravitational equilibrium
d.
Structure
Process
Organ of Corti
Rotational equilibrium
Chapter 40 Solutions
Biology
Ch. 40.1 - list and describe the five major types of sensory...Ch. 40.1 - Prob. 2CYLCh. 40.2 - Prob. 1CYLCh. 40.3 - Prob. 1CYLCh. 40.3 - give some examples of mechanoreceptors in your...Ch. 40.4 - describe the parts of the human ear and explain...Ch. 40.4 - Prob. 2CYLCh. 40.4 - explain how pitch and loudness are encoded?Ch. 40.5 - Prob. 1TCCh. 40.5 - Whales arent the only animals affected by human...
Ch. 40.5 - Prob. 1CYLCh. 40.5 - Prob. 2CYLCh. 40.6 - Prob. 1TCCh. 40.6 - Despite the presence of the Wind spot, you do not...Ch. 40.6 - Prob. 3TCCh. 40.6 - describe the structures of the human eye and...Ch. 40.6 - Prob. 2CYLCh. 40.6 - Prob. 3CYLCh. 40.7 - Prob. 1CYLCh. 40.7 - Prob. 2CYLCh. 40.8 - Prob. 1HYEWCh. 40.8 - Prob. 1CYLCh. 40.8 - Prob. 2CYLCh. 40.8 - Retinal implants have boon developed to provide...Ch. 40 - Prob. 1MCCh. 40 - Prob. 2MCCh. 40 - Prob. 3MCCh. 40 - A large receptor potential in a sensory receptor...Ch. 40 - Prob. 5MCCh. 40 - Prob. 1FIBCh. 40 - Prob. 2FIBCh. 40 - Prob. 3FIBCh. 40 - Prob. 4FIBCh. 40 - Prob. 5FIBCh. 40 - Prob. 1RQCh. 40 - Prob. 2RQCh. 40 - Why are we apparently able to distinguish hundreds...Ch. 40 - Prob. 4RQCh. 40 - Prob. 5RQCh. 40 - Diagram the overall structure of the human eye....Ch. 40 - Prob. 7RQCh. 40 - Compare and contrast rods and cones.Ch. 40 - Prob. 9RQCh. 40 - We dont merely identify odors. We also label them...Ch. 40 - Many people like to eat spicy foods, but most...
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