Precapillary sphincters will
A. control blood flow into the true capillaries.
B. cause blood to flow directly from the metarteriole into the postcapillary venule.
C. open when the tissue needs nutrients.
D. close when the tissue's needs have been met.
E. All of the answers are correct.
E
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a) Factor V b) Factor VII c) Factor XI d) Factor XIII e) Factor XIV
Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of ________.
A) arterioles B) arteries C) veins D) capillaries
mRNA is formed within the nucleus and then moves into the cytoplasm where it is involved in protein synthesis
Indicate whether the statement is true or false
Arm and legs buds appear at about 28 days from
A. somitomeres. B. neural crest cells. C. apical ectodermal ridges. D. the coelom.