心迷走神经对心脏的作用,可被下列哪一种受体的拮抗剂所阻断
A N<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230804/12695832_0.gif">胆碱能受体 B
M胆碱能受体 C
N<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230804/12695832_0_1.gif">胆碱能受体 D
β肾上腺素能受体 E
α肾上腺素能受体