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Self-test questions: Chapter 11
Return to Human Physiology 5e - student resources
Self-test questions: Chapter 11
Quiz Content
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not completed
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The efferent fibres of the autonomic system pass directly from the CNS to the organs they innervate.
True
correct
incorrect
False
correct
incorrect
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Regarding the sympathetic division of the autonomic nervous system.
Acetylcholine is secreted by sympathetic preganglionic fibres.
correct
incorrect
Most sympathetic preganglionic fibres secrete noradenaline (norepinephrine).
correct
incorrect
Sympathetic postganglionic neurons are found in spinal segments from T1 to L2.
correct
incorrect
The sympathetic chain extends from the thoracic to the sacral regions of the spinal cord.
correct
incorrect
*
not completed
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Regarding the parasympathetic division of the autonomic nervous system.
Parasympathetic preganglionic fibres are found in all cranial nerves
correct
incorrect
Parasympathetic vasoconstrictor fibres are present in the salivary glands.
correct
incorrect
Parasympathetic postganglionic neurons are found in spinal ganglia from T1 to L2.
correct
incorrect
Parasympathetic postganglionic fibres secrete acetylcholine onto their target organs.
correct
incorrect
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not completed
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Which of the following statements regarding the role of the autonomic innervation are correct?
Stimulation of the sympathetic nerves to the eyes causes dilation of the pupils.
correct
incorrect
Activation of the sympathetic system causes vasodilatation in the skin.
correct
incorrect
Activation of the sympathetic system causes vasoconstriction in the viscera and vasodilatation in skeletal muscle.
correct
incorrect
Stimulation of the vagus nerves speed up the heart
correct
incorrect
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Regarding synaptic transmission in the autonomic nervous system
The acetylcholine receptors in both parasympathetic and sympathetic ganglia are predominantly muscarinic.
correct
incorrect
Noradrenaline (norepinephrine) secreted by sympathetic postganglionic fibres acts preferentially on β-adrenoceptors.
correct
incorrect
The adrenal medulla secretes adrenaline in response to activation of muscarinic sympathetic postganglionic fibres in the splanchnic nerves.
correct
incorrect
Acetylcholine secreted by parasympathetic postganglionic fibres acts on muscarinic receptors.
correct
incorrect
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