Peripheral Mechanisms - Chemical Control
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the 4 methods of Chemical Control which regulate BP/Flow? | 1. Co2; 2. Epinephrine; 3. Histamine; 4. pH
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| How does CO2 exert chemical control over BP/Flow? | 1. direct DILATING action on most Arterioles; 2. helps maintain normal activity of CVC
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| What effect does Epinphrine have on ß1-adrenergic Receptors? | DEPOLARIZES --> increased HR
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| What effect does Epinphrine have on ß2-adrenergic Receptors? | HYPERPOLARIZES Skeletal and Coronary Arterioles --> decreased PR --> decreased BF
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| What effect does Epinphrine have on alpha-adrenergic Receptors? | DEPOLARIZES Cutaneous, Renal, and GI Arterioles --> increased PR --> decreased BF
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| Hoe does Histamine enter the Circulatory System? | released from Tissues under Trauma or Allergic reaction
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| What effect does Histamine have on BP/Flow? | GENERALIZED Vasodilation and INCREASED Capillary premeability
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| What effect does Histamine have on the Inspiratory Center? | Bronchiole CONSTRICTION
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| How does Histamin effect BP/Flow? | DECREASE Venous return --> decrease BP --> pass out
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| How does pH effect BP/Flow? | decrease O2 --> increase acidity --> contribute to dilation
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Created by:
Kristel
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