5.7 Peripheral and Autonomic Nervous System

Question 1

Types of nerve fiber which is myelinated, with motor and sensory function

Answer 1

Type A nerve fiber

Question 2

Type of nerve fiber which is thinly myelinated, mainly preganglionic autonomic, with some pain and temperature perception

Answer 2

Type B nerve fiber

Question 3

Type of nerve fiber which is unmyelinated, with sensory functions of pain and temperature

Answer 3

Type C nerve fiber

Question 4

What is the convergence of anterior and posterior nerve roots within or just proximal to the intervertebral foramen; consists of both motor and sensory nerve fibers

Answer 4

Spinal nerve

Question 5

One of the two rami of a spinal nerve which is characterized to be larger, consisting mostly of motor fibers, supplying most of the body except head and back

Answer 5

Ventral ramus

Question 6

One of the two rami of a spinal nerve which is characterized to be the smaller branch, carrying sensory fibers, and supplying nerve fibers to the synovial joints of the vertebral column, deep muscles of the back, and overlying skin

Answer 6

Posterior (dorsal) ramus

Question 7

What is formed by sensory fibers connecting with the motor fibers via an interneuron

Answer 7

Reflex arc

Question 8

Impact of lesions which is caused by disruption of sensory (afferent) neurons

Answer 8

Paresthesia

Question 9

Impact of lesions which is caused by disruption of motor (efferent) neurons

Answer 9

Paralysis

Question 10

Impact of lesions which is caused by disruption of spinal nerve

Answer 10

Both paresthesia and paralysis

Question 11

Impact of lesions which is caused by disruption of dorsal ramus

Answer 11

Back paresthesia and paralysis of deep back muscles

Question 12

Unilateral cutaneous sensory territory of a single spinal nerve

Answer 12

Dermatome

Question 13

Dermatomal area of nipple, umbilicus

Answer 13

T4T10

Question 14

Unilateral muscle mass innervated by a single spinal nerve

Answer 14

Myotome

Question 15

___ is the mixing of nerves from different cord levels by union and division of bundles

Answer 15

Plexus formation

Question 16

Cranial nerves with afferent/sensory fibers

Answer 16

PURELY Sensory: 1,2,8Mixed: 5,7,9,10

Question 17

Cranial nerves with efferent/motor fibers

Answer 17

PURELY Motor: 3,4,6,11,12Mixed: 5,7,9,10

Question 18

Cranial nerves carrying parasympathetic innervation

Answer 18

3,7,9,10

Question 19

Disorder on this cranial nerve can cause anosmia or loss of smell

Answer 19

CN I: Olfactory

Question 20

Disorder on this cranial nerve can cause anopsias or visual defects

Answer 20

CN II: Optic

Question 21

Disorder on this cranial nerve can cause eye paralysis, diplopia, or ptosisControls constriction of pupils and ciliary muscles for near vision

Answer 21

CN III: Oculomotor

Question 22

Only cranial nerve that arises from the dorsal side of the brain

Answer 22

CN IV: Trochlear

Question 23

The biggest cranial nerve; transmits sensory information from the face and motor information to muscles of mastication

Answer 23

CN V: Trigeminal

Question 24

Only cranial nerve to extend beyond head and neck

Answer 24

CN X: Vagus

Question 25

Cranial nerve that innervate the intrinsic and extrinsic muscles of the tongue; for swallowing, speech, and food manipulation

Answer 25

CN XII: Hypoglossal

Question 26

True or false: Somatic nerve fibers have only 1 neuron form the ventral horn cells to the effector organs and are lightly myelinated

Answer 26

False. Somatic nerve fibers are heavily myelinated

Question 27

True or false: Preganglionic neurons of autonomic nerve fibers are unmyelinated with postganglionic neurons are lightly myelinated.

Answer 27

False. Preganglionic neurons are LIGHTLY MYELINATED. Postganglionic neurons are UNMYELINATED.

Question 28

Location of preganglionic cell bodies of:a.) sympathetic nerve fibersb.) parasympathetic nerve fibers

Answer 28

sympathetic: thoracolumbarParasympathetic: craniosacral

Question 29

Relative lengths of neurons of:a.) sympathetic nerve fibersb.) parasympathetic nerve fibers

Answer 29

sympathetic: short preganglionic neuron, long post ganglionic neuronparasympathetic: long preganglionic neuron, short postganglionic

Question 30

The short preganglionic neurons of sympathetic division releases ___

Answer 30

acetylcholine which is excitatory (+)

Question 31

the long postganglionic neurons of sympathetic divisions release ___

Answer 31

Norepinephrine and acetylcholine

Question 32

Cranial nerve controlling the parotid gland

Answer 32

CN IX: Glossopharyngeal