Choking occurs when a piece of food becomes firmly lodged in the
a. larynx. b. trachea.
c. epiglottis. d. esophagus.
b
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The three major systems that account for the body's ability to regulate acid-base balance are the lungs, the kidneys, and
A. the intestines. B. blood buffers. C. bone structure. D. the brain.
Which organ is responsible for destruction of old RBCs and is a major site for the initiation of the immune response?
A. spleen B. liver C. bone marrow D. tonsils E. thymus
Unprocessed oils are best stored in airtight containers because:
a. exposure to the air will decrease the likelihood of rancidity. b. airtight storage destroys the natural antioxidants in the oils. c. points of unsaturation in their molecules are vulnerable to oxidation. d. this prevents hydrogenation, which makes them less healthful.
Endurance and ultraendurance athletes are concerned about some of the same issues. One of these is adequate ____
A) protein intake B) anaerobic fitness C) carbohydrate and fluid intake D) fat intake