To prevent excessive blood loss following tissue damage, local chemicals such as
A. bradykinins are released to trigger vasoconstriction.
B. vasopressins are released to trigger vasodilation.
C. nitric oxides are released to trigger vasoconstriction.
D. prostaglandins are released to trigger vasodilation.
E. thromboxanes are released to trigger vasoconstriction.
Answer: E
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Fill in the blank(s) with the appropriate word(s).
Angiotensin II
A. stimulates the adrenal cortex to release ADH. B. causes vasoconstriction. C. stimulates peripheral vasodilation. D. is responsible for increasing urine output. E. is released in response to high blood pressure.
In response to increased internal temperature, blood flow to the skin will ________.
A. increase B. remain unchanged C. decrease
Electrons whirl around the center of the atom at high speed, forming a(n)
A) spiral. B) figure 8. C) cylinder. D) electron cloud. E) helix.