1.Phenoxybezamine與α₁ 受體的結合可被視為：
(A)全致效劑（full agonist）
(B)部分致效劑（partial agonist）
(C)競爭性拮抗劑（competitive antagonist）
(D)非競爭性拮抗劑（non-competitive antagonist）

補充一下，在綠皮 Phenoxybenzamine 是α1拮

但在紅皮原文書它是α1>α2的非選擇性拮抗劑

The α-adrenergic antagonistic effects of phenoxybenzamine are more substantial with α1- than α2-adrenergic receptors.

Phenoxybenzamine demonstrates a variety of other pharmacological effects including inhibiting the reuptake of NE at presynaptic nerve terminals and acting to various degrees as an antagonist at histamine, acetylcholine, and serotonin receptors.

The predominant, and perhaps only, use of phenoxybenzamine in veterinary medicine is to manage the symptoms of catecholamine excess in the treatment of patients with a pheochromocytoma.