Blood Flow Through Most Organs in the Systemic Circuit Is

Multiple Choice

Blood flow through most organs in the systemic circuit is regulated primarily by increasing or decreasing the ________ activity to arteriolar smooth muscles in the organ.Another form of regulation,called ________,depends upon the metabolic activity of the organ.Increased activity leads to increased interstitial fluid metabolites,which cause ________ of the arterioles.The former is a type of ________ regulation of blood flow;the latter is an example of ________ regulation.

A) sympathetic;active hyperemia;dilation;extrinsic;intrinsic
B) sympathetic;reactive hyperemia;dilation;intrinsic;extrinsic
C) parasympathetic;active hyperemia;constriction;extrinsic;intrinsic
D) sympathetic;flow autoregulation;constriction;intrinsic;extrinsic
E) parasympathetic;reactive hyperemia;dilation;extrinsic;intrinsic