Gonadotropin-releasing hormone (GnRH) is secreted by the
A. anterior pituitary gland.
B. interstitial cells.
C. hypothalamus.
D. bulbourethral glands.
Answer: C
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The function of angiotensin II is to ________.
A) constrict arterioles and increase blood pressure B) decrease the production of aldosterone C) decrease arterial blood pressure D) decrease water absorption
Why do patients taking loop diuretics need to take supplemental potassium?
A) They cause active secretion of potassium in the loop of Henle. B) They inhibit intestinal absorption of potassium. C) They inhibit the reabsorption of potassium as well as sodium in the loop of Henle. D) They cause active reabsorption of potassium in the distal convoluted tubule.
The neuroeffector synapse of a postganglionic sympathetic neuron ends in a large branching network with enlarged areas called
A) varicosities. B) terminal arborizations. C) synaptic knobs. D) adrenergic endplates. E) None of the answers are correct.
Proteins that are embedded in the lipid bilayer are called ____
a. intercepting proteins b. integral proteins c. bilayer proteins d. bilamina proteins e. penetrating proteins