阿摩線上測驗
14.麻醉犬靜脈注射少量acetylcholine（10 µg/kg）後之藥理反應為何？
(A)心跳加快
(B)血壓下降
(C)抑制胃腸蠕動
(D)興奮自主神經節
答案：登入後查看
統計： A(297), B(1334), C(150), D(383), E(0) #1154240
統計： A(297), B(1334), C(150), D(383), E(0) #1154240
詳解 (共 6 筆)
沈芷萱
#1605909
乙醯膽鹼可以興奮迷走神經，舒張血管，血壓下降，增加胃腸道蠕動分泌，收縮平滑肌，縮瞳，增加唾液和淚腺分泌
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國考一定過！
#5553451
Intravenous (IV) administration of small amounts of ACh (5–10 μg/kg) produces a brief but rapid fall in systolic and diastolic blood pressures
A small dose of ACh (10 mg/kg) administered intravenously causes hypotension, bradycardia, and intestinal contractions caused by direct stimulation of muscarinic receptors.
Large doses of ACh (100 mg/kg) stimulate, in addition to muscarinic receptors, nicotinic receptors of parasympathetic and sympathetic ganglionic neurons, causing sympathomimetic responses (pressor effect and tachycardia).
Ref: Veterinary-Pharmacology-and-Therapeutics-Riviere-2009 pg.160-161
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