PNS

Question 1

PNS

Answer 1

Peripheral nervous system

Question 2

classification of nerves

Answer 2

sensory –> afferent (imput)
Motor –> efferent (output)
most nerves are mixed
these nerves stem from the brain or spinal cord

Question 3

Plexus (4 types)

Answer 3

Cervical plexus –> phrenic nerve
Brachial plexus –> radius, median, ulna, musculanteous nerves
lumbar plexus –> femoral nerve (front)
Sacral plexus –> sciatic nerve (back)

Question 4

Cranial nerves 1

Answer 4

olfactory, smell

Question 5

cranial nerve 2

Answer 5

optic, vision/sight

Question 6

cranial nerve 3

Answer 6

ocular-motor, eye movement

Question 7

cranial nerve 4

Answer 7

trochlear, eye movement

Question 8

cranial nerve 5

Answer 8

trigeminal, sensory + motor in face

Question 9

cranial nerve 6

Answer 9

abducens, eye movement

Question 10

cranial nerve 7

Answer 10

facial, face expression

Question 11

cranial nerve 8

Answer 11

vestibularcochler, hearing + balance

Question 12

cranial nerve 9

Answer 12

glossophalangeal, swallowing

Question 13

cranial nerve 10

Answer 13

vagus, digestion, heart rate

Question 14

cranial nerve 11

Answer 14

accessory, head + neck movement

Question 15

cranial nerve 12

Answer 15

hypoglossal, tonuge + taste

Question 16

sensory receptors

Answer 16

feeling through the body

Question 17

exteroreceptor

Answer 17

skin and external stimuli

Question 18

interoreceptor

Answer 18

visoro (organ)

Question 19

machanoreceptor

Answer 19

muscles

Question 20

thermoreceptor

Answer 20

temperature

Question 21

photoreceptor

Answer 21

light + color (light is rodes) (color is cone)

Question 22

chemoreceptor

Answer 22

chemical receptor, taste buds on tongue

Question 23

proprioceptors

Answer 23

skeletal muscle receptor

Question 24

nociceptor

Answer 24

pain receptor

Question 25

neurotransmitters

Answer 25

chemical receptor that carries signals

Question 26

acetylcholine (ach)

Answer 26

released at nmj and some ans neurons organ --> all muscles

Question 27

dopamine

Answer 27

Feeling of happiness, pleasure, reward (partkinsons lacks dopamine)

Question 28

GABA gamma-aminobutracid

Answer 28

slows down activity brain activity, calming, controls hunger (tells you when your full)

Question 29

serotonin

Answer 29

regulates mood, sleep, appetite, learning, memory

Question 30

endorphin

Answer 30

body's natural pain reliever, reduces pain perception and improves mood

Question 31

norepinephrine

Answer 31

fight or flight signals