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Instructions
Choose best single answer from a-d
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irresolution 01
Regarding the kind division of the involuntary nervous brass:
a. Acetylcholine is overwhelmd by some consonant postganglionic fibers.
b. Most sympathetic preganglionic fibers secrete norepinephrine
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.
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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.
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Question 03
Regarding the role of the autonomic innervation:
a. excitant 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.
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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 secreted by sympathetic postganglionic fibers acts preferentially on ?-adrenoceptors.
c. The adrenal gland medulla secretes epinephrine in response to activation of muscarinic sympathetic postganglionic fibers in the...If you want to get a sufficient essay, order it on our website: Orderessay



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