Chapter 15 Practice Quiz
On this quiz, score 80% or higher, and receive a +5 bonus on the test.
Your LAST Name:
1. Which of the following structures is not part of the external ear?
external acoustic meatus
2. Ordinarily, it is not possible to transplant tissues from one person to another, yet corneas can be transplanted without tissue rejection. This is because the cornea ________.
has no nerve supply
is not a living tissue
has no blood supply
does not contain connective tissue
3. Ceruminous glands are ________.
saliva glands found at the base of the tongue
glands found in the lateral corners of your eye
modified apocrine sweat glands
modified taste buds
4. The elasticity of the lens decreases with age. This leads to which of the following?
less accommodation of the lenses and difficulty focusing on nearby objects
a clouding of the lenses know as a cataract
less light getting to the retina and diminished visual acuity
lowered accommodation of the pupillary reflex and blurry vision
5. Photoreceptors are modified neurons. However, they differ from most neurons in the fact that ________.
photoreceptors will hyperpolarize when stimulated
photoreceptors do not have fluctuations in membrane potential
photoreceptors do not release neurotransmitters
photoreceptors are sensitive to energy changes in the external environment
6. In a person who is color blind, which of the following would you most expect to see?
an inability to regenerate 11-cis-retinal after bleaching
a loss of functions in the rods of their retina
a loss of their peripheral vision
absence of green or red cones in their foveae
7. The only special sense not fully functional at birth is the sense of ________.
8. A patient has a loss of hearing in only one ear. Which of the following is likely to be a result?
The patient will not be able to localize the origin of sounds.
The patient will not be able to track objects with the eye on the same side as the hearing loss.
The patient will have a loss of balance with dizziness and vertigo.
The patient will have increased sensitivity to sound in the unaffected ear.
9. Humans can see several thousand shades of color but have cone photoreceptors that are sensitive to only three (perhaps four) wavelengths of light. What is the best explanation for why we see so many colors?
Colors are added and enhanced in the primary visual cortex of the brain.
Shades of color are purely psychological and learned by association with age, infants only seeing in black and white.
Color perception is achieved by activation of various combinations between the three cone types.
Color perception is dependent on the millions of rods as well as cone photoreceptors.
10. Which of the following taste sensations is incorrectly matched to the chemicals that produce it?
umami-triglycerides and fatty acids
sweet-organic substances such as sugar and some lead salts
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