Arterial walls contain a thick layer of smooth muscle and an abundance of collagen and elastin fibers
Indicate whether the statement is true or false
T
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What does the ectoderm form?
A) internal epithelial layer of the urinary system B) internal epithelial layer of the digestive system C) neural plate and neural tube D) gonads and kidneys
Which of following correctly lists the sequence of steps that occur during hemostasis in response to a damaged blood vessel?
a) vascular spasm, clotting, polycythemia b) hemolysis, vascular spasm, platelet plug formation c) emigration, clotting, hemolysis d) vascular spasm, platelet plug formation, clotting e) anemia, hemogenesis, platelet plug formation
Fred's blood was determined to be AB positive. What does this mean?
A) There are no antibodies to A, to B, or to Rh antigens in the plasma. B) Antibodies to A and B are present in the red cells. C) His blood lacks Rh factor. D) He can only receive blood from a donor who is AB positive.
The gastric phase of gastric secretion begins with
A) the sight, thought, or smell of food. B) the arrival of food in the stomach. C) the entry of chyme into the small intestine. D) the entry of chyme into the large intestine. E) the release of cholecystokinin and secretin by the small intestine.