Which hormone decreases the concentration of calcium ions in body fluids?
A) triiodothyronine
B) thymosin
C) parathyroid hormone
D) thyroxin
E) calcitonin
E) calcitonin
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Mary had her stomach mostly removed to try to overcome obesity. As a result, you would expect Mary to be at risk for
A) protein malnutrition. B) abnormal erythropoiesis. C) diarrhea. D) dehydration. E) an ulcer.
The function of transverse tubules is to
A) conduct ATP molecules out of the mitochondria throughout the sarcoplasm. B) ensure a supply of glycogen throughout the muscle sarcoplasm. C) rapidly conduct action potentials to the interior of the muscle fiber. D) store Ca2+ ions inside the muscle fiber.
Which of the following hormones increases blood glucose?
a. growth hormone b. cortisol c. insulin d. Both a and b e. All of the above
Spindle-shaped cells with large single nuclei are characteristic of skeletal muscle.
a. true b. false