压力感受器（baroreceptor)直接感受血压变化，动脉血压升高时，压力感受器的传入冲动增多，反之，减少。

Drops of blood pressure can lead to renin release, which is mainly because A: stretch receptor of afferent arteriole B: aortic arch baroreceptor C: osmoreceptor in hypothalamus D: cardiopulmonary receptor