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Multiple Choice Quiz
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1
During the absorptive state, the primary source of energy for liver cell functions is
A)keto acids derived from amino acids.
B)ketone bodies derived from fatty acids.
C)lactic acid derived from muscle glycogen.
D)glucose derived from intestinal absorption.
E)pyruvate derived from glycolysis.
2
Insulin
A)facilitates the transport of glucose into most brain cells.
B)increases blood glucose levels to assure adequate nourishment for the brain.
C)promotes fat storage in the body.
D)secretion is stimulated by a lowered blood glucose level.
E)is described by none of the above.
3
Glucagon
A)is secreted by the beta cells of the pancreatic islets.
B)is secreted in response to a fall in blood glucose.
C)is, in general, antagonistic to all of the other hormones that regulate metabolism.
D)increases fat stores by inhibiting the enzyme that catalyzes breakdown of triacylglycerol.
E)is described by all of the above.
4
Epinephrine and sympathetic nervous stimulation
A)inhibit insulin secretion.
B)inhibit glucagon secretion.
C)inhibit glycogenolysis in liver and skeletal muscle.
D)A and B.
E)B and C.
5
Which of the following does not characterize diabetes mellitus?
A)Increased glucose utilization due to excessive glucose availability.
B)Excessive urination due to the osmotic effect of glucose in the urine.
C)Acidosis due to excessive levels of ketones in the blood.
D)Dehydration.
E)Hyperglycemia.
6
Cortisol
A)is produced by the adrenal medulla.
B)plasma concentrations will increase during stress
C)has effects opposite to those of insulin
D)A and B
E)B and C





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