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Question 01

Regarding the sympathetic division of the autonomic nervous system:

a) acetylcholine is secreted by some sympathetic postganglionic fibers.

b) most sympathetic preganglionic fibers secrete norepinephrine (noradrenaline).

c) sympathetic postganglionic neurons are found in spinal segments from T1 to L2.

d) the sympathetic chain extends from the thoracic to the sacral regions of the spinal cord.

Question 02

Regarding the parasympathetic division of the autonomic nervous system:

a) parasympathetic preganglionic fibers are found in all cranial nerves.

b) parasympathetic vasoconstrictor fibers are present in the salivary glands.

c) paraympathetic postganglionic neurons are found in spinal ganglia from T1 to L2.

d) parasympathetic postganglionic fibers secrete acetylcholine onto their target organs.

Question 03

Regarding the role of the autonomic innervation:

a) stimulation of the sympathetic nerves to the eyes causes pupillary constriction.

b) activation of the sympathetic system causes vasodilatation in the skin.

c) activation of the sympathetic system causes vasoconstriction in the viscera and vasodilatation in skeletal muscle.

d) stimulation of the vagus nerves speed up the heart.

Question 04

Regarding synaptic transmission in the autonomic nervous system:

a) The acetylcholine receptors in both parasympathetic and sympathetic ganglia are predominantly muscarinic.

b) Norepinephrine (noradrenaline) secreted by sympathetic postganglionic fibers acts preferentially on β-adrenoceptors.

c) The adrenal medulla secretes epinephrine (adrenaline) in response to activation of muscarinic sympathetic postganglionic fibers in the splanchnic nerves.

d) Acetylcholine secreted by parasympathetic postganglionic fibers acts on muscarinic receptors.

Oxford University Press, Online Resource Centre, Chapter 10.

Chapter 10

Instructions

Question 01

Question 02

Question 03

Question 04