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23 Cards in this Set
- Front
- Back
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What are the two components of the autonomic nervous system?
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Sympathetic (thoracolumbar)
Parasympathetic (craniosacral) |
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What are the properties of preganglionic sympathetic fibers?
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preganlionic sympathetic = SHORT & myelinated
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What are the properties of postganglion sympathetic fibers?
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postganglionic sympathetic = LONG & UNmyelinated
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What is significant regarding sympathetic splanchnic nerves traveling to the adrenal medulla?
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NO ganglion
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What is the ratio for sympathetic effects for preganlionic fibers vs post ganglionic?
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1:20 (pre:post)
Meaning that the effects of the signal are spread out (divergent) |
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What is the ratio for parasympathetic effects for preganlionic fibers vs post ganglionic?
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1:1 (pre:post)
Parasympathetics are Targeted Effects |
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What are the properties of presynaptic parasympathetic fibers?
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Long & myelinated
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What are the properties of Alpha Motor Neurons?
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Skeletal muscle
myelinated |
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What transmitter and receptor do Alpha Motor neurons use?
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transmitter: Ach
receptor: Nicotinic Cholinergic |
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What transmitter and receptor do Parasympathetics use?
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Ganglion
transmitter: ACh receptor: Nicotinic Cholinergic Target transmitter: ACh receptor: Muscarinic Cholinergic |
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What are the transmitters & receptors for sympathetics involving smooth muscles and glands? (B1 heart, B2 lungs, A1 everything, A2 pre-synaptic inhibition, B3 adipocytes)
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Ganglion
transmitter: ACh receptor: Nicotinic Cholingergic Target transmitter: Norepinephrine receptor: alpha 1,2 & beta 1,2,3 |
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What are the transmitters & receptors for sympathetics involving sweat glands & some blood vessels?
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Ganglion
transmitter: ACh receptor: Nicotinic Target transmitter: ACh receptor: Muscarinic Cholinergic |
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What is the transmitter & receptor for sympathetic splanchnic nerves affecting the adrenal medulla?
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Splanchnic -> medulla
transmitter: ACh receptor: Nicotinic (adrenal medulla is the receptor) causes release of NE & EPI |
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What are beta 1 receptors for?
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Sympathetic heart
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What are beta 2 receptors for?
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Sympathetic lungs
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What are alpha 1 receptors for?
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Sympathetic everything else
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What are alpha 2 receptors for?
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Sympathetic pre-synaptic inhibition
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What are beta 3 receptors for?
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Sympathetic adipocytes
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What vertebral levels contribute to the sympathetics?
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T1-L3
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Which nerves contribute to parasympathetics of the eye?
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CN III
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Which parasympathetic nerves contribute to salivary glands?
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CN VII & CN IX
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In the somatic nervous system where does conscious movement originate?
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cortex
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In the ANS where does unconscious regulation of digestion, blood flow, and reproduction come from?
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Subcortical
1) limbic 2) brainstem |
