PNS

Question 1

afferents

Answer 1

toward brain

Question 2

efferents

Answer 2

away from brain

Question 3

somatic sensory (afferent)

Answer 3

skin, bones, muscles, joints

Question 4

visceral sensory (afferent)

Answer 4

viscera of thoracic and abdominal region > heart, lungs, stomach, urinary bladder

Question 5

somatic motor (efferent)

Answer 5

skeletal muscle

Question 6

visceral (automatic) motor

Answer 6

glands, smooth muscle, cardiac muscle

Question 7

CNS

Answer 7

brain and spinal cord (nucleus-cell bodies) and tracts (axons)

Question 8

PNS

Answer 8

nerves (axons) and receptors (ganglia-cell bodies)

Question 9

nerves are protected by three connective tissue coverings

Answer 9

endoneurium (neurolemma)
perineurium
epineurium

Question 10

neurolemma is made of a

Answer 10

nucleated cytoplasmic layer of the schwann cell

Question 11

what neurons are the only ones that can repair

Answer 11

the ones with a neurolemma

Question 12

blindness, speech deficits, tremors, numbness are symptoms of

Answer 12

multiple sclerosis

Question 13

what degenerates in multiple sclerosis

Answer 13

myelin sheaths and oligodendrocytes in CNS

Question 14

cervical plexus (C1-C5)

Answer 14

lesser occipital nerve
great auricular nerve
transverse cervical nerve
supraclavicular nerve
phrenic nerve
suprascapular

Question 15

schwann cells produce

Answer 15

neurilemma

Question 16

schwann cells make oligodendrocytes make the myelin sheath in different directions (true or false)

Answer 16

true

Question 17

gaps in myelin sheaths

Answer 17

nodes of ranvier

Question 18

segments covered by myelin sheaths are called

Answer 18

internodes