Nerves

Question 1

cranial nerve

Answer 1

extend from brain

Question 2

endoneurium

Answer 2

delicate layer of areolar connective tissue; separates and electrically insulates each axon

Question 3

epineurium

Answer 3

thick layer of dense irregular connective tissue encloses entire nerve and provides support and protection

Question 4

fascicle

Answer 4

bundle of axons

Question 5

nerve

Answer 5

cable-like bundle of parallel axons (PNS)

Question 6

perineurium

Answer 6

layer of dense irregular connective tissue wraps fascicles; supports blood vessels

Question 7

peripheral nerve

Answer 7

bundles of neuron processes (axons); propagate action potentials

Question 8

spinal nerve

Answer 8

extend from spinal cord; connects CNS to muscles, glands, and receptors

Question 9

spinal plexuses

Answer 9

network of interweaving anterior rami of spinal nerves; axons extend and branch so damage to a single segment or nerve doesn’t result in complete loss of innervation