PNS

Question 1

What are the 4 components of the PNS?

Answer 1

Spinal nerves, cranial nerves, somatic system, autonomic system

Question 2

What are the 3 types of spinal nerves?

Answer 2

plexuses, dermatomes, myotomes

Question 3

How many cranial nerves are there?

Answer 3

12

Question 4

How many pairs of spinal nerves are there?

Answer 4

31

Question 5

How are the spinal nerves numbered?

Answer 5

according to the corresponding vertebrae

Question 6

What do the spinal nerves exit through?

Answer 6

intervertebral foramania

Question 7

What are plexuses?

Answer 7

subdivisions of the ventral rami

Question 8

Branches in the plexus allow?

Answer 8

communication with fibers from other cord levels

Question 9

Communicating branches of the plexus forms?

Answer 9

A nerve

Question 10

What are dermatomes?

Answer 10

an area of skin innervated by fibers of a specific spinal level

Question 11

What are the 4 plexuses of the body?

Answer 11

cervical, brachial, lumbar, sacral

Question 12

What do the dermatomes asses? (2)

Answer 12

spinal cord function and nerve damage

Question 13

What are myotomes?

Answer 13

muscle or group innervated from fibers of a specific spinal level

Question 14

What do the myotomes asses?

Answer 14

movement

Question 15

What are the 12 cranial nerves?

Answer 15

Olfactory, optic, oculomotor, trochlear, trigeminal. abducens, facial, auditory, glossopharyngeal, vagus, accessory, hypoglossal

Question 16

What is the function of the olfactory nerve?

Answer 16

Smell

Question 17

What is the function of the optic nerve?

Answer 17

Vision

Question 18

What is the function of the oculomotor nerve? (3)

Answer 18

Amount of light entering eye, eye movements, accommodation

Question 19

What is the function of the trochlear nerve?

Answer 19

eye movements

Question 20

What is the function of the trigmeminal nerve ? (2)

Answer 20

chewing and sensation of face

Question 21

What is the function of the abducens nerve?

Answer 21

eye movements

Question 22

What is the function of the facial nerve? (3)

Answer 22

tears, salvation, facial expressions

Question 23

What is the function of the auditory nerve? (2)

Answer 23

balance and inner ear

Question 24

What is the function of the glossopharyngeal nerve? (4)

Answer 24

taste, salvation, swallowing, regulating BP

Question 25

What is the function of the vagus nerve?

Answer 25

numerous organ functions

Question 26

What is the function of the accessory nerve? (3)

Answer 26

head and neck movements, speech

Question 27

What is the function of the hypoglossal nerve?

Answer 27

tongue movements

Question 28

What are the two types of somatic reflexes?

Answer 28

somatic pathways and autonomic pathways

Question 29

What are somatic reflexes?

Answer 29

skeletal muscle contraction

Question 30

T/F

Acetyicholine is the neurotransmitter.

Answer 30

True

Question 31

When do you test reflexes?

Answer 31

during the diagnosis of neurological function

Question 32

What is an autonomic reflex?

Answer 32

contractions of smooth or cardiac mm or secretion glands

Question 33

T/F

Autonomic pathways use norepinephrine or acetylocholine as neurotransmitter.

Answer 33

True

Question 34

Autonomic effectors are typically what? (2)

Answer 34

sympathetic and parasympathetic

Question 35

What is sympathetic?

Answer 35

decrease the tone and contractility of smooth muscles and increase heart rate

Question 36

Where does the nerve repair occur?

Answer 36

PNS only

Question 37

Nerve repair can only occur if? (3)

Answer 37

damage not extensive, cell body is intact, scarring has not yet occurred

Question 38

What happens to the muscles during nerve repair?

Answer 38

atrophy