Adrenoceptors Physiological Responses

They have poor penetration into the central nervous system (CNS).

They are highly potent in activating α or β receptors. (correct)

They have a prolonged duration of action when administered orally.

They are not readily metabolized by COMT or MAO.

Epinephrine

Isoproterenol

Amphetamine (correct)

Norepinephrine

They are less potent in activating α or β receptors.

They have poorer penetration into the central nervous system (CNS).

They have a shorter half-life due to rapid metabolism by COMT.

They have a longer duration of action due to reduced metabolism by MAO. (correct)

<p>They act directly on α or β receptors, mimicking sympathetic stimulation.</p> Signup and view all the answers

<p>They block the reuptake of norepinephrine or cause its release from adrenergic neurons.</p> Signup and view all the answers