Nervous System

Question 1

Which of the following structures is not part of the peripheral nervous system?
a. cranial nerve V
b. spinal nerves supplying the intercostal muscles
c. hypothalamus
d. a neuromuscular junction

Answer 1

c.
hypothalamus

Question 2

Which of the following carry nerve impulses towards the cell body of a neuron?
a. axons
b. nodes of Ranvier
c. myelin
d. dendrons

Answer 2

d.
dendrons

Question 3

Which of the following statements is false?
a. sensory nerve fibres carry information towards the cen-
tral nervous system
b. most nerve fibres within the grey matter of the brain are
myelinated
c. a ganglion is a collection of nerve cell bodies
d. the autonomic nervous system consists mainly of visceral motor nerves

Answer 3

b.
most nerve fibres within the grey matter of the brain are
myelinated

Question 4

The pons, medulla and cerebellum together form the:
a. forebrain
b. midbrain
c. hindbrain
d. cerebral hemispheres

Answer 4

c.
hindbrain

Question 5

Working from the outer surface of the brain to the inside, the meningeal layers are:
a. pia mater, arachnoid mater, dura mater
b. dura mater, arachnoid mater, pia mater
c. arachnoid mater, dura mater, pia mater d. dura mater, pia mater, arachnoid mater

Answer 5

b.
dura mater, arachnoid mater, pia mater

Question 6

The aqueduct of Silvius lies within which part of the central nervous system?
a. midbrain
b. hindbrain
c. spinal cord
d. forebrain

Answer 6

a.
midbrain

Question 7

Which of the following reflexes is routinely used to test for the level of anaesthesia?
a. palpebral
b. panniculus
c. anal
d. patellar

Answer 7

a.
palpebral

Question 8

Which structure is used to monitor balance?
a. organ of Corti
b. tympanic membrane
c. malleus
d. utricle and saccule

Answer 8

d.
utricle and saccule

Question 9

Short Answer

Describe the pathway taken by a ray of light to form an image
on the retina.

Question 10

Short Answer

**Fill in the blanks:

Sensory nerves carry impulses ……… the CNS
……… nerves carry impulses away from the CNS
Visceral sensory and motor nerves are associated with the heart, ………, ……… and the urinary and reproductive systems Somatic sensory and motor nerves are associated with somatic structures which include ………, ……… joints and ………**