The innermost layer of the esophagus is called the:
a. muscle layer
b. mucosa.
c. adventitia.
d. secretory layer.
e. submucosa.
b
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According to the figure, the greatest gains in life expectancy occurred _____
a. before 1900
b. between 1900 and 1950
c. between 1960 and 1980
d. after 2000
Which of the following is a property of the fat-soluble vitamins?
a. Most of them are synthesized by intestinal bacteria b. Intestinal transport occurs by way of the portal circulation c. Deficiency symptoms may take years to develop on a poor diet d. Toxicity risk is higher for vitamins E and K than for other fat-soluble vitamins
The Adequate Intake (AI) of water from fluids and foods for men is:
a. 12 cups. b. 11 cups. c. 15 cups. d. 8 cups.
This product is labeled "Gentlemen 50+" and states that the antioxidants and vitamins it contains slow aging in men. What can you state about targeted products such as this one? a. Evidence does not support a role for antioxidant supplements against chronic diseases. b. Most men over the age of 50 have inadequate nutrient intakes and would benefit from this product. c. This supplement would be
more helpful for smokers than for nonsmokers. d. The antioxidants included in this supplement have all been shown to be extremely effective in free radical protection. e. This target product is beneficial because men over 50 need a unique proportion of nutrients.