An intravenous infusion of noradrenaline differs from one of adrenalin

1.	An intravenous infusion of noradrenaline differs from one of adrenaline in that it A. Acts on alpha adrenoceptors. B. Does not act on beta adrenoceptors. C. Raises total peripheral resistance. D. Increases cardiac output. E. Decreases skin blood flow.
Answer» A. False Both act on alpha receptors but noradrenaline is the more potent stimulant. B. False Both act on beta receptors but adrenaline is the more potent stimulant. C. True Noradrenaline raises but adrenaline reduces it. D. False Adrenaline raises but noradrenaline reflexly reduces it. E. False Both constrict skin vessels due to their alpha receptor stimulant properties.

An intravenous infusion of noradrenaline differs from one of adrenaline in that it A. Acts on alpha adrenoceptors. B. Does not act on beta adrenoceptors. C. Raises total peripheral resistance. D. Increases cardiac output. E. Decreases skin blood flow.

Answer»

A. False Both act on alpha receptors but noradrenaline is the more potent stimulant.

B. False Both act on beta receptors but adrenaline is the more potent stimulant.

C. True Noradrenaline raises but adrenaline reduces it.

D. False Adrenaline raises but noradrenaline reflexly reduces it.

E. False Both constrict skin vessels due to their alpha receptor stimulant properties.

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An intravenous infusion of noradrenaline differs from one of adrenaline in that it A. Acts on alpha adrenoceptors. B. Does not act on beta adrenoceptors. C. Raises total peripheral resistance. D. Increases cardiac output. E. Decreases skin blood flow.

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