Which of the following is a feature of the muscular actions of digestion?
a. Peristalsis begins first in the stomach upon the initiation of the swallowing reflex
b. The colon has the thickest and strongest muscles of the GI organs to withstand the pressure of stool evacuation
c. The jejunum has a third layer of diagonal muscles to enhance contraction and relaxation phases for enhanced digestion
d. Segmentation in the intestines allows periodic squeezing along its length, resulting in momentary reversal of the movement of intestinal contents
d
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Adequate ____ helps athletes maintain optimal performance, but its status in an individual can be low due to the use of sunscreen
A) vitamin A B) vitamin B12 C) vitamin C D) vitamin D
A nursing mother needs at least _____ a day to receive all the nutrients required for successful lactation.
a. 1200 kcal b. 1400 kcal c. 1800 kcal d. 2000 kcal e. 2400 kcal
The health benefits of moderate alcohol intake occur in people _____ years of age and older
a. 21 b. 35 c. 55 d. 65
The professional football star Andro "The Man" McGraw claims the dietary supplement AminoProFix helped him build muscle mass quickly and safely. His endorsement of the product is an example of ________.
A. peer review B. a testimonial C. unbiased reporting D. a scientifically valid claim