Nervous

Question 1

CNS (central nervous)

Answer 1

brain + spinal cord

Question 2

PNS (peripheral)

Answer 2

somatic + autonomic [(para)sympathetic] + sensory input

Question 3

somatic

Answer 3

voluntary

Question 4

autonomic

Answer 4

involuntary bodily activities

Question 5

parasympathetic

Answer 5

bodily activities in restful conditions

Question 6

sympathetic

Answer 6

prepares body for stressful/emergency situations

Question 7

protection of the brain

Answer 7

• bones of skull and vertebral column
• meninges (3 membranes)
• cerebrospinal fluid

Question 8

midbrain

Answer 8

relays info from cerebellum or spinal cord and cerebrum

Question 9

pons

Answer 9

bridge between high/low brain centers

Question 10

medulla oblongata

Answer 10

autonomic center (heart rate, digestive activities) 
- relays sensory info to thalamus

Question 11

cerebellum

Answer 11

sensory-motor voluntary movement

- memory of learned motor patterns

Question 12

thalamus

Answer 12

processes all sensory info (except olfaction)

- relays info to appropriate higher brain centers

Question 13

hypothalamus

Answer 13

controls heart rate, blood pressure, breathing rate, body temp, food intake
- center for emotions

Question 14

gray matter (3)

Answer 14

neuroglial cells, nerve cell bodies, unmyelinated axons

Question 15

white matter (2)

Answer 15

myelinated axons + corpus callosum

Question 16

frontal lobe

Answer 16

speech, premotor/primary motor cortex

Question 17

parietal lobe

Answer 17

somatic association area, reading, taste

Question 18

temporal

Answer 18

auditory, language

Question 19

occipital

Answer 19

vision

Question 20

motor + somatosensory

Answer 20

primary motor area + primary somatosensory area

Question 21

Reticular activating system (RAS)

Answer 21

neuron network running along medulla, projects to cerebral cortex
- filters sensory input -> cerebral cortex kept alert

Question 22

reflex arc step 1/5

Answer 22

stimulus initiates pain sensation

Question 23

reflex arc step 2/5

Answer 23

sensory messages carried to spinal cord by sensory neuron

Question 24

reflex arc step 3/5

Answer 24

interneurons in spinal cord stimulate appropriate motor neurons

Question 25

reflex arc step 4/5

Answer 25

motor neurons stimulate appropriate muscles

Question 26

reflex arc step 5/5

Answer 26

muscles contract

Question 27

Schwann cells

Answer 27

neuroglia that make myelin sheath (PNS)

Question 28

Oligodendrocytes

Answer 28

make myelin sheath in CNS

Question 29

Nodes of Ranvier

Answer 29

gas between myelination

Question 30

resting potential

Answer 30

more + ions outside membrane
- charge inside
(more Na+ inside, more K+ outside)

Question 31

action potential

Answer 31

sodium gates open Na+ in -> depolarization occurs -> K+ out