Autonomic nervous system: sympathetic and parasympathetic
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| show | skeletal muscle
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| show | cardiac muscle, smooth muscle, glands
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| Somatic NS efferent pathways | show 🗑
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| Efferent pathways in ANS | show 🗑
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| Somatic neurotransmitters | show 🗑
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| Neurotransmitters of the ANS | show 🗑
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| show | "resting and digesting" D division: digestion, defacation, diuresis. Housekeeping system keeps body energy use low
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| show | "Fight or Flight" E division: exersize, excitement, emergency, embarrasement. Promotes optimal conditions for appropriate response to threats. Much broader, longer lasting effects.
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| Some effects of sympathetic division | show 🗑
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| show | besides effectors served, most are physiological
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| Ganglia | show 🗑
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| Second neuron components | show 🗑
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| Parasympathetic origin sites | show 🗑
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| Sympathetic origin sites | show 🗑
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| Parasympathetic length of fibers | show 🗑
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| Sympathetic length of fibers | show 🗑
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| Parasympathetic location of ganglia | show 🗑
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| show | close to spinal cord
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| Parasympathetic cranial outflow | show 🗑
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| show | constricts pupils (for close vision), eye lenses bulge
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| show | secretion by nasal glands, lacrimal glands (tears), submandibular and sublingual salivary glands
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| show | secretion by parotid salivory glands
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| Where do postganglionic fibers of parasympathetic division travel? | show 🗑
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| show | Forms three plexuses. 90% of all preganglionic fibers of this division leave as a part of this nerve. Serves every organ in abdominal cavity from neck to pelvis. Including to liver, gallbladder, stomach, kidneys, pancreas, small intestine, proximal large
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| show | axons run in ventral roots of spinal nerves to ventral rami. They branch to form pelvic splanchnic nerves. Some preganglionic fibers synapse w/ganglia in plexus. Most synapse w/ganglia in walls of-- distal large intestine, bladder, ureters, reproductive o
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| show | arise from T1- L2 (thoracolumnar division)
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| show | any ANS nerve tracks to different organs in pelvic cavity
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| show | visceral organs in internal cavities and all visceral structures in somatic parts of body
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| Visceral motor zones | show 🗑
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| How preganglionic fibers of sympathetic divison leave spinal cord | show 🗑
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| show | chain ganglion, this is where preganglionic fibers go after passing through white rami communicans
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| show | 1 it can synapse w/ganglionic neuron in same chain ganglion 2 it can ascend or descend the chain to synapse in another chain ganglion 3 it can pass through chain ganglion and emerge from chain w/out synapsing
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| What happens when a preganglionic sympathetic axon passes through chain ganglion and emerges w/out synapsing? | show 🗑
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| show | 1 preganglionic fibers leave spinal cord by ventral root 2 they pass through a white ramus communicantes 3 they enter chain (paravertebral) ganglion 4 they become part of the sympathetic chain (trunk) 5 once reaching this they can do one of three things:
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| show | terminal ganglia
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| Sympathetic ganglia | show 🗑
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| show | made of preganglionic fibers (which are myelinated)
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| show | No cell bodies, just postganglionic fibers (which are unmyelinated)
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| Sympathetic division: pathways that synapse in collateral ganglia | show 🗑
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| show | No dual innervation; some fibers of the thoracic splanchnic nerve synapse w/modified neurons in ________. Secretes NE and epinephrine
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| Visceral sensory neurons | show 🗑
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| show | same components as somatic, except they always have a two neuron motor chain
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| show | travel the same pathways as somatic, which creates referred pain
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| Cholinergic fibers | show 🗑
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| Adrenergic fibers | show 🗑
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| ACh and NE | show 🗑
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| show | all ANS preganglionic axons and all parasympathetic postganglionic axons at effector
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| show | bind ACh
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| Nicotinic receptors | show 🗑
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| Muscarinic receptors | show 🗑
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| show | bind NE, Alpha and Beta. Alpha binding stimulatory. Beta binding inhibitory.
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| show | Only in thoracic and lumbar regions, this is bc ONLY cell bodies of preganglionic motor neurons of Sympathetic division rest here
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| Parasympathetic preganglionic axons synapse ____ | show 🗑
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| show | ONLY by sympathetic division
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| Postganglionic sympathetic axons travel | show 🗑
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| some other effects of sympathetic division | show 🗑
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