A drop in arterial blood pressure would trigger
a. decreased GFR
b. release of aldosterone
c. increased sodium reabsorption
d. decreased chloride excretion
e. all of the above
E
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Nucleic acids are made up of
A. nucleotides joined by covalent, phosphodiester bonds.?B. nitrogenous bases joined by ionic, disulfide bonds.?C. ribose sugars joined by intermolecular, hydrogen bonds.?D. proteins and sugars joined by polar, covalent, double bonds.
The semicircular canals
a. detect the position of the head relative to gravity. b. detect rotational or angular acceleration of the head. c. contain otoliths. d. both (a) and (c) above. e. both (b) and (c) above.
Which rat(s) was euthyroid without any injections?
A) the hypophysectomized rat B) the thyroidectomized rat C) the normal rat D) the normal rat and the hypophysectomized rat
In the condition diabetes mellitus, why does glucose appear in the urine?
A. The plasma concentration of glucose becomes so high that it diffuses from peritubular capillaries into the proximal tubule, down its concentration gradient. B. The filtered load of glucose becomes greater than the tubular maximum for its reabsorption. C. Without the hormone insulin, glucose cannot enter proximal tubule epithelial cells. D. The rate of tubular secretion of glucose becomes greater than the sum of glucose filtration and reabsorption. E. Without insulin, the glomerular filtration barrier becomes extremely leaky to glucose, which is not normally filterable.