Somatostatin functions in glucose homeostasis by
a. promoting reduced growth of the body, decreasing the need of individual cells for glucose, and thereby promoting glucose sparing.
b. inhibiting digestion and absorption of nutrients, preventing hyperglycemia.
c. inhibiting secretion of prolactin, reducing production of lactose for milk, and preventing hypoglycemia.
d. doing all of these.
e. doing none of these.
B
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Which may occur as a result of muscle atrophy?
A. Reduction in muscle size B. Fibers become weaker C. Muscle loses tone D. Fibers waste away and die E. All of the choices are correct.
The magnesium atom has 2 electrons in its outer energy level and is willing to donate both of them. The sodium atom has 7 electrons in its outer energy level and will accept 1 electron. The chemical formula for the compound formed by magnesium and sodium would be
a. Mg2Na b. MgNa2 c. Mg2S d. MgS2
The structure in the nephron which has simple cuboidal epithelium with microvilli and numerous mitochondria is the ___.
a) proximal convoluted tubule b) distal convoluted tubule c) collecting duct d) loop of Henle e) glomerular capsule
What is the function of DNA?
A) DNA provides instructions for building every protein in the body. B) DNA serves as a form of chemical energy that all body cells can use. C) DNA serves as the most important fuel for body cells. D) DNA carries out the orders for protein synthesis issued by RNA. E) DNA increases the rate of a chemical reaction without becoming part of the product.