CWhich of the following best describes how gas exchange takes place in the respiratory system?
a. Oxygen and carbon dioxide enter the blood cells.
b. Oxygen and carbon dioxide filter to the blood through the alveoli.
c. Carbon dioxide passes to the blood through the capillaries.
d. Carbon dioxide leaves the blood cells.
b
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The MOST common trigger of severe allergic reactions other than injected penicillin in the United States is/are:
a. Hymenoptera stings b. Snake bites c. Food poisoning d. Jellyfish sting
A(n) ____________________ occurs whenever any microorganism, such as a virus, bacteria, parasite, fungus, or worm (helminth), invades the body and overcomes the host's native defenses.
Fill in the blank(s) with the appropriate word(s).
All of the following are recommendations regarding physical activity except:
A) engage in at least 30 minutes of moderate activity daily. B) include stretching exercises to improve flexibility. C) weight loss requires a minimum of at least 90 minutes of exercise daily. D) incorporate resistance exercised to improve strength and endurance.
Which organization must demonstrate that prescription medications are safe and effective?
A. Food and Drug Administration B. American Medical Association C. Commission on Chronic Illness D. American Public Health Association