Term
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Definition
| sympathetic & parasympathetic |
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Term
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Definition
cell bodies in thorax & lumbar section of the spinal cord
-fight or flight
-raises heart/breathing rate |
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Term
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Definition
cell bodies in brain (cranial) & sacral section of the spinal cord
-rest & digest
-brings down breathing & heart rate |
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Term
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Definition
| preganglionic & postganglionic |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| -preganglionic cell bodies in lateral gray horns in thoracolumbar region of cord |
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Term
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Definition
where the pre (short) & post (long) ganglian neurons meet
2 types:
sympathetic chain: along spine
collateral ganglia: celiac, superior & inferior mesenteric |
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Term
| sympathetic: neurotransmitters |
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Definition
preganglionic release Acetylchonie ACH (cholingergic synapse)
-excitatory
postganglionic release Norepinephrine (adrenergic synapse)
-excitatory |
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Term
| Sympathetic: Receptor types |
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Definition
2 classes for NE:
(alpha)--constric peripheral blood vessels, close sphincters
(beta)--increase metab. rate, relax blood vessels & airway muscles
1-heart: increase HR, incr, contraction strength
2-bronchioles (open airways) |
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Term
| parasympathetic division: location |
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Definition
| preganglionic cell bodies in brain and sacral region of spinal cord |
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Term
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Definition
again--> where pre(short) & post(long) ganglionic neurons meet
-peripheral ganglia in or near target organ
a)CN III, VII, IX, X (vegus): majority of body
b)Pelvic nerves: kidney, bladder, reprod organs, end of LG intestine |
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Term
| parasympathetic: neurotransmitters |
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Definition
| ACH released by pre (excitatory) ad post (excitatory or inhibitory) ggl neurons everywhere but post ggl in sympathetic |
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Term
| Parasympathetic: Receptor Types |
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Definition
2 types of ACH receptors:
-nicotinic (Excitatory) at synpase b/tw pre & post ggl neurons; also at neuromuscular jxns
-muscarinic (excitatory or inhibitory) at synapse btwn post ggl cell and effector |
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Term
| most organs are inervated by... |
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Definition
parasympathetic & sympathetic divisions
-allows for homeostasis |
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Term
| Visceral reflexes: (path of travel) |
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Definition
receptor--> sensory nerve--> processing-->
preganglionic fiber--> postganglionic fiber |
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Term
| higher levels can be involved in integration and control |
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Definition
-medulla oblongata
-hypothalamus
(limbic system & cortex) |
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Term
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Definition
a drug, medicine, chemical that acts the same as a bodies chemical
e.g. caffeine acts like NE because it speeds up heart rate |
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Term
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Definition
chemical, drug, medicine that does the opposite of the bodies chemical
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