Sensory and Motor Systems

Question 1

Adaptation

Answer 1

filtering stimuli to concentrate on the new stimuli

Question 2

Intensity

Answer 2

action potential frequency

Question 3

Somatic sensation

Answer 3

feeling from the body

Question 4

Transduction

Answer 4

the transformation of pressure, stretch, or vibration into a sensory signal

Question 5

Nociceptors

Answer 5

free nerve endings that transport pain stimuli to the CNS

Question 6

Neurites

Answer 6

undifferentiated fiber off the cell

Question 7

Homunculus (somatotopic map)

Answer 7

-neural representation of the surface of the body
-size is proportional to the sensitivity of the region

Question 8

Outer ear

Answer 8

-pinna
-eardrum

Question 9

Middle ear

Answer 9

-malleus
-incus
-stapes
-oval window

Question 10

Inner ear

Answer 10

-cochlea
-vestibular apparatus

Question 11

Pinna

Answer 11

flaps of skin and cartilage that focus sound waves

Question 12

Eardrum (tympanic membrane)

Answer 12

separates the outer ear from the middle ear

Question 13

Oval window

Answer 13

membrane that separates the air-filled middle ear and the fluid-filled inner ear

Question 14

Scala media (cochlear duct)

Answer 14

fluid-filled chamber in the middle of the cochlea

Question 15

Nasal hemiretina

Answer 15

-the half of the retina closest to the nose
-sees the lateral field of view
-decussates

Question 16

Temporal hemiretina

Answer 16

-the half of the retina closest to the temples
-sees the medial field of view
-does not decussate

Question 17

Optic tract

Answer 17

-where optic nerve fibers separate into the temporal and nasal projections

Question 18

Ischemia

Answer 18

loss of blood flow

Question 19

Infarct

Answer 19

tissue damage

Question 20

Hypoxia

Answer 20

inadequate oxygen due to a blockage

Question 21

Anoxia

Answer 21

absence of oxygen due to a rupture