Which of the following does not play a role in thermoregulation of the testes?
A) The dartos muscle
B) The cremaster muscle
C) The pampiniform plexus of veins
D) The bulbospongiosus muscle
E) The countercurrent heat exchanger
D
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A fully saturated hemoglobin molecule transports:
A) 1 molecule of oxygen. B) 2 molecules of oxygen. C) 8 molecules of oxygen. D) 4 molecules of oxygen.
Identify the segment of the nephron that makes the final adjustments to the composition of tubular fluid
A) glomerular capsule B) proximal convoluted tubule C) nephron loop D) distal convoluted tubule E) collecting duct
Oxygen and carbon dioxiode are transported between the blood and interstitial fluid by way of
A. exocytosis and endocytosis by endothelial cells. B. pinocytosis using fluid-filled vesicles. C. diffusion from areas of higher concentration to lower concentration. D. active transport (using ATP) by protein carriers of endothelial cells.
Hyperkalemia refers to an excess of what?
A) calcium B) chloride C) water d) potassium e) sodium