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10 Cards in this Set
- Front
- Back
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ANS |
Involuntary nervous system |
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ANS functions |
Regulate bp, temp, rr, water balance, urinary excretion, and digestive functions |
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Sympathetic nervous system a |
“Flight and fight” responds to stress by increase bp, rr, and bronchodilation, and decreased GI activity |
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Alpha 1 receptor |
Vasoconstriction, pupil dilation, thickened salivary glands, closure of urinary sphincter |
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Alpha 2 receptors |
Negative feedback control of norepinephrine release from presynaptic receptors. Insulin releases from pancreas |
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Beta 1 receptors |
Increase heart rate increase myocardial contraction |
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Beta 2 receptors |
Vasodilation, bronchial dilation, increased breakdown of muscles and liver glycogen, relaxation of uterine smooth muscle |
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Parasympathetic |
“Rest and digest” decreased hr, decreased rr, decreased bp |
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Muscurinic receptors |
Pupil constriction, decreased hr, increased gi motality and secretions |
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Nicotinic receptors |
Muscle contractions |
