The hormone calcitonin functions to
A) stimulate osteoclast activity.
B) stimulate the absorption of calcium and phosphate ions in the digestive tract.
C) depress calcium levels in body fluids.
D) depress osteoblast activity.
E) elevate calcium levels in body fluids.
C) depress calcium levels in body fluids.
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The two common iliac veins form the
A) femoral vein. B) greater saphenous vein. C) inferior vena cava. D) hepatic portal vein. E) innominate vein.
The _____ sends out an electrical impulse that begins and regulates the heartbeat.?
A) ?AV node B) ?SA node C) ?Purkinje fibers D) ?AV bundle
Cutaneous carcinomas are usually caused by regular exposure to
A) X-rays. B) mutagenic chemicals. C) ultraviolet light. D) gamma radiation.
Starting from the glomerular (Bowman's) capsule, the correct order of the renal tubule regions is ________
A) proximal convoluted tubule, distal convoluted tubule, nephron loop (loop of Henle) B) distal convoluted tubule, nephron loop (loop of Henle), proximal convoluted tubule C) nephron loop (loop of Henle), proximal convoluted tubule, distal convoluted tubule D) proximal convoluted tubule, nephron loop (loop of Henle), distal convoluted tubule E) distal convoluted tubule, proximal convoluted tubule, nephron loop (loop of Henle)