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Which of the following is NOT a function of the eyelids?


A) A barrier to microorganisms
B) Protects the eyes from foreign objects
C) Lubricates the eyes
D) Regulate the amount of light entering the eyes

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What is found in the vitreous chamber of the eye?


A) Serous fluid
B) Vitreous humor
C) Good humor
D) Aqueous humor

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The area of the retina that contains the highest amount of photoreceptors is the


A) Fovea centralis
B) Optic disc
C) Macula
D) None of the choices is correct

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Which of the following is NOT one of the seven primary odors?


A) Musky
B) Salty
C) Putrid
D) Camphoraceous
E) Floral

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Odors can produce strong emotional reactions and memories because the olfactory cortex is part of the


A) Reticular activating system
B) Basal nuclei
C) Limbic system
D) Medial lemniscal system

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Sounds with a higher pitch will maximally distort the basilar membrane


A) Nearest the oval window
B) Nearest the apex
C) Nearest the middle of the cochlea
D) At several places along the membrane

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Which auditory ossicle is connected to the inner ear at the oval window?


A) Malleus
B) Stapes
C) Incus
D) Cochlea

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The lens is a biconcave disk that is avascular and transparent.

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What must be true in order to detect an odor?


A) The odorant must dissolve in mucus of the nasal cavity
B) The dissolved odorant binds to receptors on olfactory hairs
C) A G protein is activated when an odorant binds to its receptor which opens sodium and calcium gates
D) All of the choices are true

Correct Answer

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What is the function of the round window?


A) Transmit sound waves to the scala vestibuli
B) Transmit sound waves to the cochlear canal
C) Stops the sound waves from reflecting back toward the cochlear canal
D) All of the choices are correct

Correct Answer

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The adjustment of the eyes when going from a lighted area to a dark area is called


A) Light adaptation
B) Accommodation
C) Dark adaptation
D) Visual adaptation

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The part of the electromagnetic spectrum that can be detected by the human eye is


A) Visible light
B) Gamma rays
C) Infrared light
D) Microwaves

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Which of the following is NOT a specialized epithelial cell found in taste buds?


A) Chorda tympani
B) Taste cells
C) Basal cells
D) Supporting cells

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Which of the following is NOT an interneuron of the retina?


A) Ganglion cells
B) Interplexiform cells
C) Horizontal cells
D) Amacrine cells

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Which eye disorder results in clear vision of close objects and blurry vision of distant objects?


A) Hyperopia
B) Astigmatism
C) Myopia
D) Strabismus

Correct Answer

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Which is the proper order of the focusing system of the eye?


A) Cornea, lens, aqueous humor, vitreous humor
B) Aqueous humor, lens, vitreous humor, cornea
C) Cornea, aqueous humor, lens, vitreous humor
D) Lens, vitreous humor, cornea, aqueous humor

Correct Answer

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The decreased ability to function in dim light is called


A) Strabismus
B) Presbyopia
C) Astigmatism
D) Nyctalopia

Correct Answer

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Excess tears flow through lacrimal canaliculi into the oral cavity.

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The specialized cell extensions of hair cells that will stimulate neurons for hearing are called


A) Cilia
B) Flagella
C) Stereocilia
D) Villi

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Increasing the curvature of the lens will _____ the refraction.


A) Increase
B) Decrease
C) Have no effect

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