Week 6 - Homework - special senses

Question 1

Pitch discrimination is possible because different sounds…

Answer 1

stimulate different regions of the Organ of Corti

Question 2

The vitreous body…

Answer 2

helps to stabilize the eye and give physical support to the retina

Question 3

Conductive deafness can result from…

Answer 3

1. impacted earwax
2. ossification of the stapes

Question 4

Sound waves are converted into mechanical movements by…

Answer 4

the tympanic membrane
(initiated by)

Question 5

The portion of the that determines eye color is

Answer 5

the iris

Question 6

Some neural tissue retain stem cells (basal cells) and thus the capacity to divide and replace lost neurons.

Which of the special senses can replace its damaged neural receptors?

Answer 6

Olfaction

Question 7

If the neuron originating in the distal portion of the Organ of Corti were destroyed, how might this affect the patient?

Answer 7

Partial sensory deafness for sounds of low pitch

Question 8

Motion sickness occurs when

Answer 8

vestibular and visual sensory information appears to detect different events

Question 9

Static equilibrium receptors that report the position of the head in space relative to the pull of gravity are contained in what structure?

Answer 9

macula

Question 10

Olfactory receptors send axons through the cribiform plate of the ethmoid bone. They synapse on neurons in the

Answer 10

olfactory bulb

Question 11

The quantity of neurotransmitter released by a hair cell involved in equilibrium:

a. varies depending on the strength of the stimulus
b. is affected by the direction the stereocilia are bent with respect to the kinocilim
c. determines if a sensory neuron will be excited
d. all of the above
B and C only

Answer 11

d. all of the above

Question 12

If your vision is 20/15, this means that you can…

Answer 12

see objects at 20 feet that people with normal vision can see at 15 feet

Question 13

Which of the following descriptions best matches the term otoliths?

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. seals the oval window

Answer 13

d. tiny weights necessary for the static sense of equilibrium