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19 Cards in this Set
- Front
- Back
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what are the different types of effectors of the ANS?
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Smooth muscle, cardiac muscle, glands of the body.
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What is the difference between somatic nervous system and autonomic nervous system?
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Somatic nervous system has one nerve system. Thick myelination.
ANS has two motor neuron, which synap at ANS ganglion. |
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What is the two division of the ANS?
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Sympathetic division & parasyspathetic division.
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What does sympathetic division do? In general and examples(11.)
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Causes "fight or flight response." Make the heart rate faster, dilate pupils, cold sweaty skin, dry mouth, more O2 in lung, less digestion, no urine, genitals stimulated.
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What does parasympathetic divison do? In general and examples(7.)
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Causes "rest and digest."
Constricted pupil, lots of saliva, slower breathing, abdominal organs stimulated, bladder and genitals also stimulated. |
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Describe anatomy of PSNS (parasysmpathetic nervous system)
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Preganglionic neuron is long.
Postganglionic neuron is short Axon branches less, both preganglionic and postganglionic axon secrete acetylcholine (cholinergic) |
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Describe anatomy of SNS.
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Preganglionic neuron is short
Post ganglionic neuron is long Axon branches a lot, preganglionic axon uses acetycholine (cholinergic)postganglionic axon secrete norepinephrine(adrenergic) |
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Where do SNS originate? Where is preganglionic cell?
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Between T1 and L2.
In the visceral motor region of the spinal gray matter (lateral gray horn). |
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What are two classes of the sympathetic ganglia?
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Sympathetic trunk ganglia
Collateral ganglia |
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The sympathetic trunk ganglia
are joined to the ventral rami of spinal nerves by ______ and _____. |
White rami communicantes
Gray rami communicates |
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Where does parasympathetic division originate?
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From oculomotor nerve(3), facial nerve(7),glossopharyngeal(9),and vagus nerve (10), sacral spinal cord S2-S4
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What is another name for sympathetic division and parasympathetic division?
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Thoracolumbar division
Craniosacral division |
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How does the adrenal medulla assist the ANS?
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It secrete great quantities of two excitatory homones;norepinephrine and epinephrine (adrenaline), and produce widespread excitatory effects.
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What type of neurons are the visceral sensory receptors?
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Interorecepters and peripheral ganglia.
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What are the five companents of a visceral reflex?
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1.Receptor organ,2.Visceral sensory or afferent neuron (unipolar),3. Visceral motor of efferent (Pre-ganglionic)4. Visceral motor or efferent neuron (Post-ganglionic), muscles) 5. Effector organ (e.g. gland or smooth muscles)
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Describe an unusual feature of visceral pain.
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When visceral organ is cut or scraped, often there is very little pain.
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What can cause visceral pain?
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Chemicla irritation, inflammation, muscle spasm, excessive stretch (eating too much)
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Why is it hard to pinpoint where the pain is coming from?
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Because of very low density of nociceptive fibers
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Define referred pain?
Example of refered pain. |
Pain felt in the area distant from its are of origin. Heart attack felt in superior thoracic and medial side of the left arm, Gallblader in shoulder
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