Which of these three paracrine chemicals cause vasodilation?
a)ATP
b)adenosine
d)nitric oxide
a)ATP
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What is the function of melanin?
A) It provides water-resistant properties to the integument. B) It continuously divides to replace cells that are lost or shed at the epithelial surface. C) It is converted by the kidneys into the hormone calcitriol. D) It is required for the normal maintenance of epithelial cells. E) It protects DNA from the damaging effects of ultraviolet radiation.
Which of the following does not always involve the plasma membrane?
a. endocytosis b. secretion c. formation of an endocytic vesicle d. pinocytosis e. vesicle formation
Which of the following is a product of glycolysis?
A. Acetyl-CoA B. Lactate C. Glucose D. Pyruvate E. Carbon dioxide
The simple knee-jerk reflex is an example of a(n) ________ reflex.
A. monosynaptic B. contralateral C. ipsilateral D. multisynaptic E. crossed-extensor