MULTIPLE CHOICE 1.The autonomic nervous system is a.part of the somatic nervous

Question : MULTIPLE CHOICE 1.The autonomic nervous system is a.part of the somatic nervous : 1417063


1.The autonomic nervous system is

a.part of the somatic nervous system

b.the involuntary branch of the peripheral nervous system's efferent division

c.part of the central nervous system

d.part of the afferent division of the nervous system

e.all of these

2.The overall functioning of the ANS contributes to

a.conservation of energy resources when stress levels are low

b.mobilization of energy reserves when stress levels are high

c.suppression of non-vital activities when stress levels are high


e.all of the above


Which one of the following involves a response of a skeletal muscle through an efferent output?

a.augmented breathing from the diaphragm

b.delayed emptying of the stomach

c.increased pumping of blood

d.increased secretion of insulin

e.initiation of sweating

4.Which is not characteristic of sympathetic pathways?

a.Fibers originate from the thoracic and lumbar levels

b.Preganglionic fibers release norepinephrine

c.Some postganglionic fibers release ACh

d.Short preganglionic fibers

e.Most preganglionic fibers synapse in the chain ganglia


What system would suppress the digestive organs during times of greater physical activity?



c.enteric nervous system

d.somatic nervous system

e.none of these

6.Postganglionic autonomic fibers

a.end in a single synaptic knob that releases the neurotransmitter

b.have numerous varicosities that simultaneously release neurotransmitter over a large area of the innervated organ rather than on single cells

c.innervate skeletal, smooth, and cardiac muscle

d.have characteristics a and c

e.have characteristics b and c

7.Parasympathetic postganglionic fibers

a.arise from the ganglion chain located along either side of the spinal cord

b.are cholinergic

c.secrete a chemical messenger that binds to muscarinic receptors

d.have characteristics a and b

e.have characteristics b and c

8.The parasympathetic nervous system

a.has long preganglionic fibers that end on terminal ganglia, which lie in or near the effector organ

b.dominates in quiet, relaxed situations

c.releases a postganglionic neurotransmitter that binds with muscarinic receptors

d.has neurons that display nicotinic receptors

e.has all of the above characteristics

9.The sympathetic nervous system

a.releases NE from most of its preganglionic neurons

b.has some postganglionic fibers that release acetylcholine

c.has preganglionic neurons that originate in the thoracic and lumbar regions of the spinal cord

d.has characteristics a and b

e.has characteristics b and c

10.Which of the following does not characterize the sympathetic nervous system?

a.It promotes responses that prepare the body for strenuous physical activity.

b.It has some afferent fibers.

c.Most of its postganglionic fibers are adrenergic.

d.Its effects may be excitatory or inhibitory.

e.Its postganglionic neurons display nicotinic receptors.




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Biology 1 Year Ago 804 Views
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