The process of the decrease in size of any organ, such as the thymus gland, with age is ________.
Fill in the blank(s) with the appropriate word(s).
involution
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What happens to blood pressure during exercise?
A. It increases slightly; some cardiovascular changes promote an increase while others promote a decrease. B. It decreases greatly because vasodilation in skeletal muscles and heart tissue more than offsets factors that increase blood pressure. C. It decreases slightly; some cardiovascular changes promote a decrease while others promote an increase. D. It increases greatly because cardiac output increases and vasoconstriction in inactive organs raises blood pressure directly.
Which part of the intrinsic conduction system delays the impulse briefly before it moves on to the ventricles?
What will be an ideal response?
About 95% of the lipids in the human diet are ________.
A. triglycerides B. lecithins C. cholesterol derivatives D. starches and other complex polysaccharides E. phospholipids
Starch is the
A. storage carbohydrate in plants. B. major nutrient for most body cells. C. nondigestible plant polysaccharide. D. storage carbohydrate in animals. E. sugar found in RNA.