Autonomic Nervous System and Special Senses Questions and Correct Answers the Latest Update

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Autonomic Nervous System and
Special Senses Questions and
Correct Answers the Latest Update
the ANS consists of


✓ motor neurons that innervate smooth and cardiac muscle and glands



is ANS controlled consciously?


✓ no, subconscious control



all ganglionic synapses in both ANS systems use what neurotransmitter?


✓ ACh



what is the only part of the sympathetic system that does not use ganglion and

post ganglionic axon?


✓ adrenal gland
✓ preganglionic axon releases ACh straight to adrenal medulla



postganglionic axons from sympathetic system release what neurotransmitter?


✓ norepinephrine



postganglionic axons from the parasympathetic system release what

neurotransmitter?
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✓ ACh



what is the myelination like for postganglionic axons?


✓ unmyelinated



are somatic effects stimulatory or inhibitory?


✓ always stimulatory



are autonomic effects stimulatory or inhibitory?


✓ can be either, depending on type of receptors



parasympathetic nerves originate from


✓ brain stem and sacral nerves



sympathetic nerves originate from


✓ thoracolumbar region of spinal cord



what is dual innervation for ANS?


✓ served by both sympathetic and parasympathetic divisions, but they cause opposite
effects



role of parasympathetic division

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