Tawanda finishes a sprint and suffers great pain in her calf muscles. Her muscle cramps are most likely due to a temporary deficit of
A. ATP.
B. actin.
C. myosin.
D. ADP.
Answer: A
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Which of the following is NOT true of the thymus gland?
A. It is located in the neck. B. It is an endocrine gland. C. It produces thymosin. D. It is important in the body's immune system.
Someone with tachyarrhythmia would be expected to show an abnormally
A. small Q-T interval. B. large P-R interval. C. large R-R interval. D. high amplitude P wave.
During an acute asthma attack, the obstruction is caused by _______.
A. a spasm of the diaphragm B. bronchiole smooth muscle spasms C. loss of elastic recoil D. destruction of the walls of the alveoli
Which are characteristics of aldosterone? Choose all that apply.
A. It decreases water reabsorption. B. It increases water reabsorption. C. It decreases sodium reabsorption. D. It increases sodium reabsorption.