A person fasting for several days would meet the majority of their blood glucose needs through ________.
A. ketogenesis
B. lipolysis
C. glycogenolysis
D. gluconeogenesis
Answer: D
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Which statement about the medullary vertical osmotic gradient is incorrect?
a. Juxtamedullary nephrons create the gradient through countercurrent multiplication. b. Vasa recta supply blood to the medulla while conserving the gradient. c. Collecting tubules of juxtamedullary nephrons, but not cortical nephrons, descend through the gradient before emptying into the renal pelvis. d. The gradient permits excretion of urine of differing concentrations by means of vasopressin-controlled, variable H2O reabsorption from the final tubular segments. e. None of the above statements are incorrect.
Determine the effect of hypokalemia on resting membrane potential
A) Hypokalemia has no effect on resting membrane potential. B) Hypokalemia causes the membrane potential to become hyperpolarized. C) Hypokalemia causes the membrane potential to become depolarized. D) Hypokalemia promotes a more positive resting membrane potential.
What is the most harmful result of prolonged depolarization at cholinergic sites?
a. heart attack b. brain embolism c. atherosclerosis d. lung cancer e. respiratory failure
Blood contains NaCl, protein, and cells. The NaCl is in a(n) ________, the protein is in a(n) ________, and the cells are in a ________
A) solvent; emulsion; colloid B) colloid; suspension; solution C) suspension; colloid; solution D) solution; colloid; suspension E) emulsion; solution; suspension