Type II diabetes is characterized by
A) a lack of response by target cells to insulin.
B) a decrease in secretion by pancreatic beta cells.
C) excessive secretion of glucagon.
D) inadequate insulin production.
E) low blood-glucose concentration.
A
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Gray matter is present in a spinal cord in three horns. Surgically cutting across the horns destroys which material?
A) Myelinated axons B) Depolarizing axons C) Cell bodies D) Potassium channels
Only free H+ contributes to the hydrogen ion concentration.
A) True B) False
Exercise increases catecholamine release. Stimulation of ?-adrenergic receptors specifically leads to:
A. increased insulin secretion B. vasodilation of skeletal muscle arterioles C. vasoconstriction of splanchnic arterioles D. vasodilation of veins and lymphatics E. a positive inotropic effect on cardiac function
When intestinal chyme is highly concentrated,
A. water moves by osmosis into the lumen of the small intestine. B. water moves by osmosis from the intestinal lumen into the blood. C. water moves by endocytosis from intestinal lumen into interstitial spaces. D. water moves by exocytosis from interstitial spaces into the stomach. E. water does not move.