Question 1

Vitreous humor

Accepted Answer

A)  is produced on a daily basis.
B)  is less viscous than aqueous humor.
C)  does not contribute to intraocular pressure.
D)  helps to hold the lens and retina in place.
E)  is located in the anterior chamber.F) C) and D)
G) B) and C)

Question 2

Match the structure with the appropriate description.
-visual field

Accepted Answer

A)  the area that can be seen with the eyes open
B)  opening in the orbit through which the optic nerve passes
C)  the cerebral area that integrates messages from retina
D)  area where medial ganglion cell axons cross over
E)  the route of the ganglionic axons beyond the chiasmaF) A) and D)
G) A) and C)

Question 3

Which of the special senses contains receptor neurons that are the only nerve cells in direct contact with the outside environment?

Accepted Answer

A)  equilibrium
B)  hearing
C)  smell
D)  taste
E)  visionF) C) and D)
G) A) and E)

Question 4

When you try to focus on the tip of your nose,

Accepted Answer

A)  the pupils dilate.
B)  the ciliary muscles relax.
C)  the lens becomes more spherical.
D)  the tension on the suspensory ligament increases.
E)  the lens becomes flatter.F) C) and D)
G) All of the above

Question 5

Damage to the chorda tympani in the right ear could result in loss of taste on the right anterior two-thirds of the tongue.

Accepted Answer

A) True 
 B)False

Question 6

The photoreceptor cells are located

Accepted Answer

A)  on the surface of the retina.
B)  in the ganglionic layer of the retina.
C)  in the photoreceptive layer of the retina.
D)  in the choroid layer of the retina.
E)  in the pigment cell layer of the retina.F) B) and C)
G) C) and E)

Question 7

The lacrimal glands

Accepted Answer

A)  cause a sty when inflamed.
B)  constantly produce a fluid called tears.
C)  are located in the superomedial corner of the orbit.
D)  are innervated by parasympathetic fibers from the oculomotor nerve.
E)  produce sebum.F) A) and D)
G) A) and E)

Question 8

The anterior and posterior chambers of the eye are separated by the

Accepted Answer

A)  lens.
B)  retina.
C)  cornea.
D)  iris.
E)  optic disc.F) B) and D)
G) C) and D)

Question 9

Match the structure with the appropriate description.
-eyebrows

Accepted Answer

A)  lubricate the eyelid
B)  protect the eye from falling objects
C)  an inflamed ciliary gland
D)  small tubes that drain tears into the lacrimal sac
E)  inflammation of the conjunctivaF) B) and C)
G) C) and D)

Question 10

For distant vision,

Accepted Answer

A)  the lens is more spherical.
B)  the suspensory ligaments relax.
C)  the ciliary muscles are relaxed.
D)  light is refracted more by the lens than by the humors.
E)  the lens is thickened.F) A) and C)
G) A) and B)

Question 11

The round window

Accepted Answer

A)  reflects sound waves.
B)  vibrates the basilar membrane.
C)  allows for compression of the organ of Corti.
D)  acts as a mechanical release for waves within the cochlea.
E)  increases the pressure of the perilymph.F) B) and C)
G) B) and D)

Question 12

Color vision

Accepted Answer

A)  is a function of cone cells.
B)  is most acute in dim light.
C)  is interpreted in the cerebellum.
D)  depends on the amount of available rhodopsin.
E)  is the interaction between rods and cones.F) A) and B)
G) C) and D)

Question 13

Which of the following is a part of the bony labyrinth?

Accepted Answer

A)  malleus
B)  vestibule
C)  cochlear duct
D)  tympanic membrane
E)  ossiclesF) A) and D)
G) C) and E)

Question 14

Some thyroid disorders are characterized by an increase in the width of the palpebral fissure.This would be an increase in the distance between the

Accepted Answer

A)  eyebrows.
B)  eyelashes.
C)  eyelids.
D)  eyes.
E)  lacrimal glands.F) A) and B)
G) B) and E)

Question 15

The cornea

Accepted Answer

A)  is highly vascular.
B)  maintains the shape of the eye.
C)  is white like the rest of the sclera.
D)  is part of the focusing system of the eye.
E)  does not contain connective tissue.F) B) and D)
G) A) and E)

Question 16

What molecule is activated from the binding of an odorant to transmembranous receptor molecules on olfactory hairs?

Accepted Answer

A)  cAMP
B)  calmodulin
C)  troponin
D)  G proteinE) All of the above
F) A) and B)

Question 17

Rods,a type of photoreceptor cell,respond to light (stimulus) by

Accepted Answer

A)  depolarizing.
B)  repolarizing.
C)  hypopolarizing.
D)  hyperpolarizing.
E)  opening Na+ channels in the cell membrane.F) C) and E)
G) A) and E)

Question 18

The age-associated changes that result in loss of accommodation of the eyes is called

Accepted Answer

A)  myopia.
B)  hyperopia.
C)  presbyopia.
D)  retinopia.
E)  astigmatism.F) A) and E)
G) B) and C)

Question 19

Match the structure with the appropriate description.
-optic foramen

Accepted Answer

A)  the area that can be seen with the eyes open
B)  opening in the orbit through which the optic nerve passes
C)  the cerebral area that integrates messages from retina
D)  area where medial ganglion cell axons cross over
E)  the route of the ganglionic axons beyond the chiasmaF) A) and C)
G) A) and B)

Question 20

Match the structure with the appropriate description.
-palpebral fissure

Accepted Answer

A)  the angle where the eyelids join
B)  the space between the two eyelids
C)  another name for the eyelids
D)  the membrane that covers the inner surface of the eyelids
E)  the membrane that covers the anterior sclera of the eyeF) All of the above
G) B) and E)

Exam 15: The Special Senses

Which of the following is a part of the bony labyrinth?

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Which of the special senses contains receptor neurons that are the only nerve cells in direct contact with the outside environment?

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The round window

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Some thyroid disorders are characterized by an increase in the width of the palpebral fissure.This would be an increase in the distance between the

Correct AnswerverifiedShow Answer

Damage to the chorda tympani in the right ear could result in loss of taste on the right anterior two-thirds of the tongue.

Correct AnswerverifiedShow Answer

What molecule is activated from the binding of an odorant to transmembranous receptor molecules on olfactory hairs?

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Vitreous humor

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When you try to focus on the tip of your nose,

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The anterior and posterior chambers of the eye are separated by the

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The cornea

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Rods,a type of photoreceptor cell,respond to light (stimulus) by

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Color vision

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Match the structure with the appropriate description. -eyebrows

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Match the structure with the appropriate description. -visual field

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Match the structure with the appropriate description. -optic foramen

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Match the structure with the appropriate description. -palpebral fissure

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The age-associated changes that result in loss of accommodation of the eyes is called

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The photoreceptor cells are located

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The lacrimal glands

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For distant vision,

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