Distribution of blood to tissues and organs is affected by a) circulating hormones b) all of...
Distribution of blood to tissues and organs is affected by
a) circulating hormones
b) all of the other answers
c) local metabolite concentrations
d) the intrinsic activity of arteriolar smooth muscle
e) the autonomic nervous system
Homework Answers
b) all of the other answers
Reason:
Autonomic nervous system mainly sympathetic & parasympathetic nervous system are going to change "contractile activity" of vascular smooth muscles according to "cholinergic & adrenergic neurotransmission" result in changes to distribution of blood to tissues and organs. Contraction of smooth muscle in the arteries has specific effect on the supply of the blood to tissues and organs because vasoconstriction & vasodilation is through the "contraction of smooth muscle" in the blood vessel. This contraction is going to regulate blood supply to tissues & organs. Circulating hormones such as adrenaline (released from chromaffin cells of adrenal gland) is going to act on the heart to regulate hear contraction result in change in the blood supply to the tissues & organs. Local metabolites & local factors such s "nitric oxide" etc may trigger changes in blood distribution level to tissues & organs.
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