Blood Flow Through Most Organs Is Regulated Primarily by Increasing

question 32

Multiple Choice

Blood flow through most organs 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

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