L7 continued

Question 1

White matter

Answer 1

Primarily myelinated axons

Question 2

Gray matter

Answer 2

Primarily unmyelinated dendritic and cell body

Question 3

Outer layer of gray matter in brain known as

Answer 3

Cerebral cortex

Question 4

Outer layer of white matter with inner layer of gray

Answer 4

Spinal cord

Question 5

Bundles of myelinated axon

Answer 5

Tracts

Question 6

Association tracts

Answer 6

Connect regions of cerebral Cortex within same hemisphere

Question 7

Projection tracts

Answer 7

Connect cerebral cortex to spinal cord and lower brain

Question 8

Basal Nuclei

Answer 8

Regulate motor functions
diseases like Parkinsons associated with involuntary movement

Question 9

Diencephalon

Answer 9

Composed of thalamus, hypothalamus,
and epithalamus, Switching center for sensory, motor, and visceral pathways

Question 10

Thalamus

Answer 10

Sorts, edits, and relays information, filters out unimportant signals (background noise)

Question 11

Epithalamus

Answer 11

Contins pineal glands, secretes melatonin, regulate sleep/wake cycle

Question 12

Hypothalamus

Answer 12

Controls autonomic nervous system, regulates body temperature, regulates activity of pituitary gland

Question 13

Brainstem

Answer 13

Cardio vascular center- controls heart beat/blood pressure
Respiratory center- breathing

Question 14

Cerebellum

Answer 14

stores memories of learned movement

Question 15

Spinal cord structure

Answer 15

-31 pairs
-ventral roots carry motor info
-dorsal roots carry sensory info

Question 16

Spinal cord function

Answer 16

Communication to and from brain, contains spinal reflex center

Question 17

Peripheral Nersous System

Answer 17

Spinal and cranial nerves, both sensory and motor info

Question 18

Sensory receptors are ctivated by __

Answer 18

external stimuli

Question 19

Extrocepters detect ___

Answer 19

stimuli from outside the body

Question 20

Proprioceptors detect __

Answer 20

changes in stretch in joint tissues

Question 20

Introceptors detect __

Answer 20

stimuli from inside the body

Question 20

Sensation (primary)

Answer 20

General awareness of change

Question 20

Mechanoreceptors

Answer 20

Respond to movements

Question 20

Photoreceptors

Answer 20

Respond to light

Question 20

Thermoreceptors

Answer 20

Respond to change in temperature ex: 60 degree weather to 20 degree

Question 20

Chemoreceptors

Answer 20

Respond to blood chemistry changes ex: glucose drop

Question 20

Nociceptors respond to

Answer 20

painful stimuli ex: getting burned

Question 21

Perception (association)

Answer 21

Interpretation of stimuli

Question 22

Adaptation

Answer 22

Decreased sensitivity to constant stimuli ex: not noticing a smell after prolonged exposure