Peripheral Nervous System

Question 1

Plexus

Answer 1

A network of interconnecting nerves

Question 2

Dermatome

Answer 2

An area of skin that is supplied by a single spinal nerve

Question 3

Myotome

Answer 3

Group of muscles innervated by a single spinal nerve

Question 4

Visceral efferent nerves can be divided into . . .

Answer 4

Sympathetic and parasympathetic

Question 5

. . . efferent nerves innervate the viscera (organs) and periphery (vasculature and sweat glands)

Answer 5

Sympathetic

Question 6

. . . efferent nerves innervate the viscera (organs) only

Answer 6

Parasympathetic

Question 7

Ganglion

Answer 7

A collection of cell bodies outside the CNS

Question 8

Nucleus

Answer 8

A collection of cell bodies inside the CNS

Question 9

Where do afferent fibres have their cell bodies?

Answer 9

Spinal ganglia

Question 10

Visceral afferent nerves carry information from the . . .

Answer 10

Viscera (thoracic, abdominal and pelvic organs)

Question 11

How is the conduction velocity of a peripheral nerve classified?

Answer 11

Letters A, B, and C

A is the fastest

Question 12

How is the axonal diameter of a peripheral sensory nerve classified?

Answer 12

Roman numerals I-IV

I is the largest

Question 13

What are the 3 layers of connective tissue in a peripheral nerve, and where are they located?

Answer 13

Epineurium - External layer
Perineurium - Covering individual fascicles
Endoneurium - Covering individual axons

Question 14

How are peripheral nerves arranged?

Answer 14

Into fasciculi

Question 15

What are the two types of internal receptor?

Answer 15

Proprioceptor - movement and joint position

Enteroceptor - movement through guts and blood pH