Netter's MCQs Chapter 20: Autonomics of the Head & Neck

Question 1

The autonomic nervous system provides innervation to all, EXCEPT

a: glands
b: smooth muscle
c: skeletal muscle
d: cardiac muscle

Answer 1

c: skeletal muscle

Question 2

The ANS uses which chain system?

a: 1-neuron
b: 2-neuron
c: 3-neuron
d: 4-neuron

Answer 2

b: 2-neuron

Question 3

The ANS is divided into which 2 parts?

a: enteric and somatic
b: central and peripheral
c: somatic and sympathetic
d: sympathetic and parasympathetic

Answer 3

d: sympathetic and parasympathetic

Question 4

The two main neurotransmitters utilised in the synapses of the ANS are norepinephrine and

a: dopamine
b: epinephrine
c: acetylcholine
d: phenthylamine

Answer 4

c: acetylcholine

Question 5

Norepinephrine is typically used at which of the following synapses in the ANS?

a: between sympathetic preganglionic and sympathetic postganglionic fibres
b: between sympathetic postganglionic and effector organs
c: between parasympathetic preganglionic and parasympathetic postganglionic fibres
d: between parasympathetic postganglionic and effector organs

Answer 5

b: between sympathetic postganglionic and effector organs

Question 6

Which ANS fibres are associated with muscarinic receptors?

a: sympathetic preganglionic
b: sympathetic postganglionic
c: parasympathetic preganglionic
d: parasympathetic postganglionic

Answer 6

d: parasympathetic postganglionic

Question 7

Which fibres of the ANS are associated with alpha or beta receptors?

a: sympathetic preganglionic
b: sympathetic postganglionic
c: parasympathetic preganglionic
d: parasympathetic postganglionic

Answer 7

b: sympathetic postganglionic

Question 8

Sympathetic fibres arise from which structure?

a: cranial nerve X
b: sacral fibres 2-4
c: cranial nerve IX
d: lumbar fibres 1 and 2

Answer 8

d: lumbar fibres 1 and 2

Question 9

Which cranial nerve does NOT give rise to craniosacral fibres?

a: X
b: XI
c: III
d: VII

Answer 9

b: XI

Question 10

What type of receptor is located between preganglionic fibres and postganglionic fibres?

a: beta
b: alpha
c: nicotinic
d: muscarinic

Answer 10

c: nicotinic

Question 11

Which fibre synapse directly on salivary glands to cause secretion?

a: sympathetic preganglionic
b: sympathetic postganglionic
c: parasympathetic preganglionic
d: parasympathetic postganglionic

Answer 11

d: parasympathetic postganglionic