Short Review of the Autonomic Nervous System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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What does the peripheral nervous system (PNS) consist of? | all the neurons and ganglia outside of the CNS
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Afferent neurons | sensory- from periphery to CNS
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Efferent neurons | motot-from CNS to PNS
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What are the 2 main neurotransmitters of the ANS? | acetylcholine and norepinephrine
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What does the autonomic nervous system do? | without conscious effort controls involuntary activities in smooth muscle, secretory glands and visceral organs.
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What are cholinergenic fibers? | nerves that secrete acetylcholine
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What type of effects does acetylcholine cause on body organs and tissues? | parasympathetic affects
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What are adrenergic fibers? | Fibers that secrete norepinephrine
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What type of effect does norepinephrine have on the organs and tissues? | A sympathetic effect
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Stimulation of the ANS can be what? | Either sympathetic or parasympathetic
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What are ligands? | Neurotransmitters, meds, or hormones that bind to receptors
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What is a ligand that bind to a receptor called? | A first messenger
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What does the ligand-receptor combo then activate? | A cell-membrane bound protein. An effector enzyme that activates molecule inside the cell (that is referred to as the 2nd messenger).
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Created by:
cspearsall
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