#1: Anatomy

Question 1

Two structural types of neurons:

Answer 1

Multipolar (MC) and Pseudounipolar (Sensory only in PNS)

Question 2

Motor neuron cell bodies found in the gray matter of the spinal cord are called

Answer 2

lower motor neurons

Question 3

Motor neuron cell bodies found in the nuclei of the brain are called

Answer 3

Upper motor neurons

Question 4

Components of a nerve fiber: (3)

Answer 4

• axon
• its neurolemma
• surrounding endoneurial CT

Question 5

cell membrane of Schwann cells that surround the axon, separating it from other axons

Answer 5

Neurolemma

- Schwann cell may or may not regenerate myelin, aka myelinated and unmyelinated tissues

Question 6

an insulator of the axon

Answer 6

myelin

Question 7

A nerve consists of: (3)

Answer 7

• a bundle of nerve fibers (fascicle) outside the CNS
• CT covering that surrounds and binds the nerve fibers together
• BV to supply nerve

Question 8

tough thick CT that surrounds and encloses a bundle of fascicles; outer most covering of a “nerve”

Answer 8

epineurium

Question 9

dense connective tissue enclosing a fascicle of nerve fibers

Answer 9

Perineurium

Question 10

delicate connective tissue directly covering nerve fiber

Answer 10

endoneurium

Question 11

Cranial Nerves:

Answer 11

1- Olfactory
2- Optic
3- Oculomotor
4- Trochlear
5- Trigeminal
6- Abducens
7- Facial
8- Auditory/Vestibulocochlear
9- Glossopharyngeal 
10- Vagus
11- Spinal Accessory
12- Hypoglossal

Question 12

Trigeminal nerve consists of these 3 branches:

Answer 12

• maxillary
• mandibular
• opthalamic

Question 13

Posterior Rami supply nerve fibers to: (3)

Answer 13

• joints of the spine
• spinal muscles
• skin of the back

Question 14

Anterior Rami supply nerve fibers to: (2)

Answer 14

• muscles and skin of anterior and lateral aspect of the trunk
• plexus formation

Question 15

Cell body and axon in the PNS are found where?

Answer 15

cell body: ganglion

axon: nerves and nerve plexuses

Question 16

Cell body and axon in the CNS are found where?

Answer 16

cell body: grey matter of the spinal cord or brain

axon: white matter of the spinal cord or brain