Question 1

Beginning at the external acoustic meatus,list,in order,the structures involved in hearing.

Accepted Answer

Sound waves enter the external acoustic meatus - tympanic membrane - auditory ossicles - oval window - basilar membrane - round window of scala tympani - hair cells vibrate against tectorial membrane - information relayed to CNS by cochlear nerve of cranial nerve VIII.

Question 2

Describe the structure of a photoreceptor.

Accepted Answer

A photoreceptor is made up of an outer s...

Question 3

Stimulation of nociceptive receptors within the trigeminal nerve might produce a perception of

Accepted Answer

A)  intensely sweet.
B)  intensely sour.
C)  quite salty.
D)  peppery hot.
E)  decidedly bitter.F) A) and E)
G) A) and B)

Question 4

Which of the following descriptions best matches the term stereocilia?

Accepted Answer

A)  move up and down when the stapes moves back and forth
B)  transmit movement of the tympanic membrane to the inner ear
C)  bending these produces receptor potential in hair cells
D)  tiny weights necessary for the static sense of equilibrium
E)  seal the oval windowF) A) and D)
G) A) and C)

Question 5

Which layer of the eye would be the first affected by inadequate tear production?

Accepted Answer

A)  pupil
B)  iris
C)  retina
D)  sclera
E)  conjunctivaF) None of the above
G) D) and E)

Question 6

Each gustatory cell extends ________ (or taste hairs) into the surrounding fluids through a narrow taste pore.

Accepted Answer

A)  papillae
B)  flagella
C)  cilia
D)  microvilliE) None of the above
F) A) and D)

Question 7

The quantity of neurotransmitter that is released by a hair cell corresponds to all of the following except

Accepted Answer

A)  responds to almost any mechanical stimulation of the hair cell.
B)  is sensitive to which way stereocilia are bent with respect to the kinocilium.
C)  determines if a sensory neuron will be excited.
D)  is greatest when the hair cell is at a neutral position.
E)  None of the answers is correct.F) C) and E)
G) A) and E)

Question 8

What structure changes the shape of the lens for far and near vision?

Accepted Answer

A)  aqueous humor
B)  ciliary body
C)  iris
D)  extrinsic eye muscles
E)  none,because the lens is rigidF) A) and D)
G) A) and B) B

Question 9

The largest numbers of taste buds in adults are associated with the

Accepted Answer

A)  pharynx.
B)  larynx.
C)  filiform papillae.
D)  fungiform papillae.
E)  circumvallate papillae.F) B) and D)
G) All of the above E

Question 10

Before an olfactory receptor can detect an odorant,it has to

Accepted Answer

A)  contact a specialized olfactory cell.
B)  bind to receptors in olfactory dendrites.
C)  gate open ion channels.
D)  respond to applied pressure.
E)  be transported to the olfactory bulbs.F) A) and D)
G) A) and B)

Question 11

________ fills the membranous labyrinth.

Accepted Answer

A)  Interstitial fluid
B)  Perilymph
C)  Endolymph
D)  CSF
E)  PlasmaF) D) and E)
G) A) and B)

Question 12

Olfactory glands

Accepted Answer

A)  house the sense of smell.
B)  support the olfactory epithelium.
C)  react to aromatic molecules.
D)  coat the olfactory epithelium with a pigmented mucus.
E)  group as olfactory bulbs.F) B) and C)
G) A) and C)

Question 13

Light passing through the eye along the visual axis strikes what part of the retina?

Accepted Answer

A)  optic nerve
B)  optic disc
C)  fovea centralis
D)  ganglion cells
E)  bipolar cellsF) B) and E)
G) A) and E)

Question 14

A structure that is located at the medial angle of the eye and contains glands that contribute to a gritty deposit is the

Accepted Answer

A)  palpebra.
B)  lacrimal caruncle.
C)  lacrimal gland.
D)  Meibomian gland.
E)  conjunctiva.F) A) and B)
G) A) and C)

Question 15

An abnormal illusion of movement is called

Accepted Answer

A)  conductive hearing loss.
B)  nerve hearing loss.
C)  vertigo.
D)  cataracts.
E)  myopia.F) None of the above
G) C) and D)

Question 16

When an external force bends the stereocilia of the inner ear hair cells,

Accepted Answer

A)  the force is converted into mechanical energy.
B)  the hair cells are temporarily damaged.
C)  there is a change in the transmembrane potential of the hair cells.
D)  dizziness results.
E)  the cells become unresponsive.F) D) and E)
G) B) and D)

Question 17

________,or pinkeye,results from damage to or irritation of the conjunctival surface.

Accepted Answer

A)  Cataract
B)  Conjunctivitis
C)  Myopia
D)  Hyperopia
E)  EmmetropiaF) C) and E)
G) All of the above

Question 18

The part of the eye that determines eye color is the

Accepted Answer

A)  lens
B)  cornea.
C)  iris.
D)  pupil.
E)  retinaF) A) and D)
G) A) and E)

Question 19

The olfactory receptor cell can be activated by as few as ________ odorant molecules.

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) D) and E)
G) A) and E)

Question 20

The sense of taste is also known as

Accepted Answer

A)  gustation.
B)  olfaction.
C)  equilibrium.
D)  proprioception.
E)  interoception.F) All of the above
G) A) and D)

Exam 15: The Special Senses

Beginning at the external acoustic meatus,list,in order,the structures involved in hearing.

Correct AnswerverifiedSound waves enter the external acoustic meatus - tympanic membrane - auditory ossicles - oval window - basilar membrane - round window of scala tympani - hair cells vibrate against tectorial membrane - information relayed to CNS by cochlear nerve of cranial nerve VIII.

Describe the structure of a photoreceptor.

Correct AnswerverifiedA photoreceptor is made up of an outer s...View AnswerShow Answer

Stimulation of nociceptive receptors within the trigeminal nerve might produce a perception of

Correct AnswerverifiedShow Answer

Which of the following descriptions best matches the term stereocilia?

Correct AnswerverifiedShow Answer

Which layer of the eye would be the first affected by inadequate tear production?

Correct AnswerverifiedShow Answer

Each gustatory cell extends ________ (or taste hairs) into the surrounding fluids through a narrow taste pore.

Correct AnswerverifiedShow Answer

The quantity of neurotransmitter that is released by a hair cell corresponds to all of the following except

Correct AnswerverifiedShow Answer

What structure changes the shape of the lens for far and near vision?

Correct AnswerverifiedB

The largest numbers of taste buds in adults are associated with the

Correct AnswerverifiedE

Before an olfactory receptor can detect an odorant,it has to

Correct AnswerverifiedShow Answer

________ fills the membranous labyrinth.

Correct AnswerverifiedShow Answer

Olfactory glands

Correct AnswerverifiedShow Answer

Light passing through the eye along the visual axis strikes what part of the retina?

Correct AnswerverifiedShow Answer

A structure that is located at the medial angle of the eye and contains glands that contribute to a gritty deposit is the

Correct AnswerverifiedShow Answer

An abnormal illusion of movement is called

Correct AnswerverifiedShow Answer

When an external force bends the stereocilia of the inner ear hair cells,

Correct AnswerverifiedShow Answer

________,or pinkeye,results from damage to or irritation of the conjunctival surface.

Correct AnswerverifiedShow Answer

The part of the eye that determines eye color is the

Correct AnswerverifiedShow Answer

The olfactory receptor cell can be activated by as few as ________ odorant molecules.

Correct AnswerverifiedShow Answer

The sense of taste is also known as

Correct AnswerverifiedShow Answer

Correct Answer
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Sound waves enter the external acoustic meatus - tympanic membrane - auditory ossicles - oval window - basilar membrane - round window of scala tympani - hair cells vibrate against tectorial membrane - information relayed to CNS by cochlear nerve of cranial nerve VIII.

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A photoreceptor is made up of an outer s...
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