Chapter 13.2 : Spinal Nerves, Ganglia, and Nerve Plexus

Question 1

Spinal cord communicates with the rest of the body by
way of

Answer 1

spinal nerves

Question 2

nerve

Answer 2

a cordlike organ composed of numerous nerve
axons bound together by connective tissue

Question 3

Spinal nerves =

Answer 3

mixed nerves - contain both afferent
(sensory) and efferent (motor) fibers

Question 4

nerves of peripheral nervous system are ________ in Schwann cells

Answer 4

ensheathed

Question 5

external to neurilemma, each fiber is surrounded by basal lamina and then a thin sleeve of loose connective tissue

Answer 5

endoneurium

Question 6

fascicles

Answer 6

nerve fibers gathered in bundles

Question 7

perineurium

Answer 7

wraps fascicles // composed of up to 20 layers of
overlapping, squamous , epithelium-like cells

Question 8

epineurium

Answer 8

bundles numerous fascicles that constitutes whole
nerve // composed of dense irregular connective tissue // protects nerve from stretching and injury

Question 9

Functional Classification of Nerve Fibers

Answer 9

Afferent or efferent
Somatic or visceral
General and special

Question 10

sensory (afferent) nerves

Answer 10

– carry signals from sensory
receptors to the CNS

Question 11

Spinal Nerves

Answer 11

mixed nerves