PNS Anatomy Revision

Question 1

what are the two main types of neurone

Answer 1

• multipolar
• unipolar

Question 2

where is the cell body of multipolar neurone

Answer 2

CNS

Question 3

where is the cell body of unipolar neurone

Answer 3

PNS

Question 4

nerve vs tract

Answer 4

same thing but tract is in the CNS, nerve in PNS

Question 5

do ‘tracts’ tend to consist of single or mixed modality

Answer 5

single

Question 6

do most nerves tend to consist of single or mixed modality

Answer 6

mixed

Question 7

how many thoracic vertebrae are there

Answer 7

12

Question 8

in C1-C7, is the nerve above or below the vertebrae

Answer 8

above

Question 9

is T6 nerve above or below T6 vertebrae

Answer 9

below

Question 10

dermatome level of nipple

Answer 10

T4

Question 11

dermatome level of umbilicus

Answer 11

T10

Question 12

dermatome level of posterior scalp, neck and shoulder

Answer 12

C2-C4

Question 13

dermatome level of upper limb

Answer 13

C5-T1

Question 14

which rami are involved in nerve plexuses, anterior or posterior

Answer 14

anterior

Question 15

are sympathetic and parasympathetic types of sensory or motor innervation

Answer 15

motor

Question 16

what are the 4 types of glial cells

Answer 16

• astrocytes
• oligodendrocytes
• microglia
• ependymal cells

Question 17

which glial cells have numerous processes (star-shaped) and maintain the BBB and homeostasis

Answer 17

astrocytes

Question 18

name the 2 types of astrocytes, and which matter each are found in

Answer 18

• fibrous (white matter)
• protoplasmic (grey matter)

Question 19

which type of glial cells produce myelin sheath in the CNS

Answer 19

oligodendrocytes

Question 20

ALL sensory axons pass from the spinal nerve into the ____ root then into the ____ rootlets then into the ____ horn of the spinal cord

Answer 20

posterior

Question 21

ALL motor axons pass from the ____ horn of the spinal cord into the ____ rootlets then into the _____ root then into the spinal nerve

Answer 21

anterior

Question 22

which type of glial cells are antigen presenting/phagocytic cells

Answer 22

microglia

Question 23

what type of glial cells line the ventricles of the brain

Answer 23

ependymal cells

Question 24

difference between a nucleus and a ganglion

Answer 24

a collection of nerve cell bodies in the:
- CNS (nucleus)
- PNS (ganglion)

Question 25

are motor neurones of skeletal muscle and autonomic nervous system unipolar or multipolar neurones?

Answer 25

multipolar

Question 26

CN I modality

Answer 26

sensory (special)

Question 27

CN II modality

Answer 27

sensory (special)

Question 28

CN III modality

Answer 28

motor

Question 29

CN IV modality

Answer 29

motor

Question 30

CN V modality

Answer 30

both (sensory and motor)

Question 31

CN VI modality

Answer 31

motor

Question 32

CN VII modality

Answer 32

both (sensory and motor)

Question 33

CN VIII modality

Answer 33

sensory (special)

Question 34

CN IX modality

Answer 34

both (sensory and motor)

Question 35

CN X modality

Answer 35

both (sensory and motor)

Question 36

CN XI modality

Answer 36

motor

Question 37

CN XII modality

Answer 37

motor

Question 38

where do the spinal nerves exit the spine

Answer 38

through their intervertebral foramen

Question 39

cervical plexus spinal level

Answer 39

C1-C4

Question 40

brachial plexus spinal level

Answer 40

C5-T1

Question 41

Lumbar plexus spinal level

Answer 41

L1-L4

Question 42

Sacral plexus spinal level

Answer 42

L5-S4