Question 1

In order for a molecule to be detected by the olfactory neurons, it must

Accepted Answer

A)  be present in high concentrations. 
B)  be one of the seven primary classes of odors. 
C)  be dissolved in fluid covering the olfactory epithelium. 
D)  interact with the mechanoreceptors of the olfactory hair membrane. 
E)  enter the nose slowly. 
A)  be present in high concentrations. 
B)  be one of the seven primary classes of odors. 
C)  be dissolved in fluid covering the olfactory epithelium. 
D)  interact with the mechanoreceptors of the olfactory hair membrane. 
E)  enter the nose slowly.

Question 2

Rapid changes in altitude can rupture the eardrum. Symptoms that may occur include

Accepted Answer

A)  dizziness. 
B)  light headedness. 
C)  feeling of a "full" ear. 
D)  ringing in the ears. 
E)  hearing impairment. 
A)  dizziness. 
B)  light headedness. 
C)  feeling of a "full" ear. 
D)  ringing in the ears. 
E)  hearing impairment.

Question 3

Why does a person's nose run when he cries?

Accepted Answer

A)  Tears drain into the nasal cavity via the nasolacrimal duct. 
B)  Parasympathetic nerve stimulation causes the nose to secrete mucus. 
C)  Intense stimulation of the facial nerve as a result of crying increases nasal secretions. 
D)  The lacrimal glands secrete tears directly into the nose. 
E)  This stimulates fluid production in the nose. 
A)  Tears drain into the nasal cavity via the nasolacrimal duct. 
B)  Parasympathetic nerve stimulation causes the nose to secrete mucus. 
C)  Intense stimulation of the facial nerve as a result of crying increases nasal secretions. 
D)  The lacrimal glands secrete tears directly into the nose. 
E)  This stimulates fluid production in the nose.

Question 4

The sensory cells for hearing are located in the

Accepted Answer

A)  organ of Corti or spiral organ. 
B)  oval window. 
C)  middle ear. 
D)  vestibule. 
E)  semicircular canals. 
A)  organ of Corti or spiral organ. 
B)  oval window. 
C)  middle ear. 
D)  vestibule. 
E)  semicircular canals.

Question 5

The optic disc

Accepted Answer

A)  is located in the vascular tunic. 
B)  is the site of greatest visual acuity. 
C)  is also called the macula lutea. 
D)  is on the anterior surface of the eye. 
E)  contains no photoreceptor cells. 
A)  is located in the vascular tunic. 
B)  is the site of greatest visual acuity. 
C)  is also called the macula lutea. 
D)  is on the anterior surface of the eye. 
E)  contains no photoreceptor cells.

Question 6

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

Question 7

Which tastant is NOT correctly matched with its process of depolarization?

Accepted Answer

A)  salty - Na+ 
B)  umami - G protein 
C)  bitter - K+ 
D)  sour - H+ 
E)  sweet - G protein 
A)  salty - Na+ 
B)  umami - G protein 
C)  bitter - K+ 
D)  sour - H+ 
E)  sweet - G protein

Question 8

In normal near vision light is refracted _____ than in distant vision, thus the lens is _____.

Accepted Answer

A)  less; flattened 
B)  more; flattened 
C)  more; rounded 
D)  less; rounded 
A)  less; flattened 
B)  more; flattened 
C)  more; rounded 
D)  less; rounded

Question 9

Match the structure with the appropriate description.
-sty

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 conjunctiva 
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 conjunctiva

Question 10

Blood vessels enter the eye and nerve processes exit the eye at the

Accepted Answer

A)  optic disc. 
B)  macula lutea. 
C)  sensory retina. 
D)  fovea centralis. 
E)  pupil. 
A)  optic disc. 
B)  macula lutea. 
C)  sensory retina. 
D)  fovea centralis. 
E)  pupil.

Question 11

How does the avascular cornea acquire oxygen?

Accepted Answer

A)  Oxygen diffuses from the atmosphere to the cornea. 
B)  Lysozyme in tears releases oxygen to nourish the cornea. 
C)  The ciliary body provides oxygen to the cornea. 
D)  Oxygen diffuses from the capillaries in the iris to the cornea. 
A)  Oxygen diffuses from the atmosphere to the cornea. 
B)  Lysozyme in tears releases oxygen to nourish the cornea. 
C)  The ciliary body provides oxygen to the cornea. 
D)  Oxygen diffuses from the capillaries in the iris to the cornea.

Question 12

Olfactory adaptation occurs when odorant receptors become saturated.

Accepted Answer

A) True 
 B)False

Question 13

Match the description with the most appropriate structure.
-ceruminous glands

Accepted Answer

A) structures that produce earwax 
B) fluid in the membranous labyrinth 
C) fluid between the membranous and bony labyrinth 
D) ossicles connect this structure to eardrum 
E) connects the middle ear to the pharynx 
A) structures that produce earwax 
B) fluid in the membranous labyrinth 
C) fluid between the membranous and bony labyrinth 
D) ossicles connect this structure to eardrum 
E) connects the middle ear to the pharynx

Question 14

The auditory tube

Accepted Answer

A)  amplifies sound waves. 
B)  helps maintain balance. 
C)  carries sound to the eardrum. 
D)  carries sound to the inner ear. 
E)  equalizes air pressure between the middle ear and outside air. 
A)  amplifies sound waves. 
B)  helps maintain balance. 
C)  carries sound to the eardrum. 
D)  carries sound to the inner ear. 
E)  equalizes air pressure between the middle ear and outside air.

Question 15

Which of the following is (are) associated with the retina?

Accepted Answer

A)  lens 
B)  ciliary muscle 
C)  pupil 
D)  suspensory ligaments 
E)  rods and cones 
A)  lens 
B)  ciliary muscle 
C)  pupil 
D)  suspensory ligaments 
E)  rods and cones

Question 16

The receptor cells for which of the following special senses are bipolar neurons?

Accepted Answer

A)  equilibrium 
B)  hearing 
C)  smell 
D)  taste 
E)  touch 
A)  equilibrium 
B)  hearing 
C)  smell 
D)  taste 
E)  touch

Question 17

Which of the following situations would have the greatest affect on depth perception?

Accepted Answer

A)  having a deficiency of vitamin D 
B)  having conjunctivitis 
C)  the amount of pupillary dilation 
D)  losing one eye in an accident 
E)  the local climate where one lives 
A)  having a deficiency of vitamin D 
B)  having conjunctivitis 
C)  the amount of pupillary dilation 
D)  losing one eye in an accident 
E)  the local climate where one lives

Question 18

Which portion of the ear contains the sense organs for hearing and balance?

Accepted Answer

A)  external ear 
B)  middle ear 
C)  inner ear 
D)  auditory tube 
E)  tympanic membrane. 
A)  external ear 
B)  middle ear 
C)  inner ear 
D)  auditory tube 
E)  tympanic membrane.

Question 19

The transparent anterior portion of the sclera is the

Accepted Answer

A)  iris. 
B)  retina. 
C)  cornea. 
D)  choroid. 
E)  pupil. 
A)  iris. 
B)  retina. 
C)  cornea. 
D)  choroid. 
E)  pupil.

Question 20

What is the function of the inner hair cells?

Accepted Answer

A)  The inner hair cells detect chemicals in saliva; they are responsible for our ability to taste. 
B)  The inner hair cells protect the external auditory canal. 
C)  The inner hair cells are responsible for hearing. 
D)  The inner hair cells regulate the tension of the basilar membrane. 
A)  The inner hair cells detect chemicals in saliva; they are responsible for our ability to taste. 
B)  The inner hair cells protect the external auditory canal. 
C)  The inner hair cells are responsible for hearing. 
D)  The inner hair cells regulate the tension of the basilar membrane.

Exam 15: The Special Senses

In order for a molecule to be detected by the olfactory neurons, it must

Rapid changes in altitude can rupture the eardrum. Symptoms that may occur include

Why does a person's nose run when he cries?

The sensory cells for hearing are located in the

The optic disc

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

Which tastant is NOT correctly matched with its process of depolarization?

In normal near vision light is refracted _____ than in distant vision, thus the lens is _____.

Match the structure with the appropriate description. -sty

Blood vessels enter the eye and nerve processes exit the eye at the

How does the avascular cornea acquire oxygen?

Olfactory adaptation occurs when odorant receptors become saturated.

Match the description with the most appropriate structure. -ceruminous glands

The auditory tube

Which of the following is (are) associated with the retina?

The receptor cells for which of the following special senses are bipolar neurons?

Which of the following situations would have the greatest affect on depth perception?

Which portion of the ear contains the sense organs for hearing and balance?

The transparent anterior portion of the sclera is the

What is the function of the inner hair cells?

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In normal near vision light is refracted _ than in distant vision, thus the lens is _.