Blood flow through most organs in the systemic circuit is regulated primarily by increasing or decreasing the sympathetic activity to arterioral smooth muscles in the organ. Another form of regulation called active hyperemia, depends upon the ,metabolic activity of the organ. Increased activity leads to increased interstitial fluid metabolites, which cause dilation of the arterioles, the former is a type of extrinsic regulation of blood flow; the latter is an example of intrinsic regulation.
Answer:
False
Explanation:
The cactus performs this through stems as the leaves are modified into spines. Photosynthesis is a physiochemical or photo-biochemical process(anabolic and endergonic ) in which organic compounds are synthesized into inorganic raw materials in the presence of light and pigment.
Answer:
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Explanation:
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Boundary between two air masses of different temperatures and/or humidity levels
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