An eccentric contraction is described as
A. action potential frequency is high enough that no relaxation of muscle fibers occurs.
B. a muscle produces constant tension during contraction.
C. a muscle produces an increasing tension during contraction.
D. a muscle produces increasing tension as it shortens.
E. a muscle produces tension, but the length of the muscle is increasing.
E
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Exocrine glands differ from endocrine glands in that exocrine glands
A. secrete through ducts or tubes to the body's exterior. B. secrete only local hormones. C. only secrete salts. D. secrete only into the bloodstream.
Aging of the brain begins
A. before birth. B. at birth. C. after age 50. D. at age 30.
The urinary system filters the blood, concentrates waste products, and removes waste products from the body.
Answer the following statement true (T) or false (F)
Which of the following cells do NOT normally have many aquaporins in their plasma membranes?
A. Lungs B. Skin C. Kidneys D. Salivary glands