Aldosterone ________
A) is secreted by the posterior pituitary
B) presence increases potassium concentration in the blood
C) production is greatly influenced by ACTH
D) functions to increase sodium reabsorption
D
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A blood clot that forms abnormally in a blood vessel is a(n)
A) thrombus. B) platelet plug. C) embolus. D) aneurysm.
Occlusion of blood vessels tends to lead to
A. increases in perfusion. B. defibrillation of cardiac muscle cell contraction. C. increases in capillary exchange. D. inadequate blood supply and damage to body tissues.
Functions of the urinary system include all of the following except
A) regulation of blood volume and blood pressure. B) regulation of plasma concentration of certain ions. C) helping to stabilize blood pH. D) conservation of valuable nutrients. E) storage of fat-soluble vitamins.
Which of the following is a physiological buffer?
A) Bicarbonate buffer B) Protein buffer C) Phosphate buffer D) Renal mechanism