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13 Cards in this Set
- Front
- Back
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α1
Big Picture |
Constricts
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α1
Locations |
Eye
Blood Vessels GI GU Rectopilaris muscles Lungs |
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α1
Actions |
Eye - constricts radial fibers in eye leading to pupillary dilation
Blood vessels - constricts GI, GU - constricts sphincters arrector pili muscle - contracts, causing hair to stand on end Lungs - bronchoconstriction, minor compared to β2 bronchodilation |
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mydriasis
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dilation of the pupil
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miosis
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Constriction of the pupil
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α2
Big picture |
decrease cAMP
Inhibitory effects of β receptors (Giant α2 fish eats β1, β2, β3 leading to negative feedback) Platelet aggregation (α2 fish poops out β1, β2, β3 -- platelet aggregation) |
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α2
Actions |
Decreased lipolysis
Decreased insulin release Decreased NE secretion in brain This leads to decreased HR & decreased CO (cardiac output) Decreased salivary secretion |
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β1
Big picture summary |
Think of as βone or "BONE"
If you slam Bone against Heart Results are: ⇑ HR ⇑ Contractility ==> ⇑ CO (cardiac output) If you slam BONE against kidney Results are: ⇑ Renin ==> activation of RAAS (renin angiotensin aldosterone system) |
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β1
Locations |
Heart
Kidneys |
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β2
Big picture |
Expand to ββ like a butterfly
"EXPANDS" |
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β2
Actions |
⇑ cAMP
==> relaxes smooth muscle Minor effects like β1 Lungs - expands alveoli & blocks histamine release Blood vessel - expand vessels Expands GLU supply ⇑ gluneogenesis ⇑ glycogenlysis ⇑ insulin release Uterus - expands |
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β2
locations |
Smooth muscle
Lungs Blood vessel Liver Pancreas Uterus |
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β3
action |
Lipolysis
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