PNS

Question 1

describe what is found in the dorsal and ventral horns

Answer 1

dorsal horn has nuclei for sensory

ventral horn has nuclei for motor- skel mm

Question 2

whats the intermediolateral cell column and what is in it

Answer 2

lateral horns, autonomic pre-ganglionic neurons that inn smooth m

Question 3

What is in DRG

Answer 3

cell bodies to ALL afferent sensory fibers, except vagus afferents

Question 4

What is the difference of dorsal and ventral roots

Answer 4

dorsal roots transmit afferent (sensory) fibers of somatic and visceral origins
ventral roots transmit efferent(motor) fibers to somatic and visceral structures

Question 5

Define a spinal nerve

Answer 5

a mixed nerve (motor and sensory) formed at junction of dorsal and a ventral root

Question 6

what is in the dorsal primary ramus

Answer 6

all types of nerves to innervate cutansous and subcutaneous areas of the dorsal surface of head, neck and trunk as well as deep back mm and joints of the spine

Question 7

what is the ventral primary ramus

Answer 7

ventral branch of a spinal nerve containing fibers of all types which inn the limbs and ventral torso.
FORM ALL somatic n plexuses in the body

Question 8

What are the 4 functional fibers found in spinal nerves

Answer 8

General somatic afferent
General visceral afferent
General somatic efferent
General visceral efferent

Question 9

General somatic afferent fiber

Answer 9

carry info from skel mm, tendons and joints and (pain touch temperature)

Question 10

General visceral afferent

Answer 10

carry info from internal structures

Question 11

General somatic efferent

Answer 11

carry fibers to innervate skel m

Question 12

General visceral efferent

Answer 12

autonomic fibers

inn smooth mm and cardiac m and glands