Consider the first digestive challenge presented in the text: Human beings breathe, eat, and drink through their mouths. Air taken in through the mouth must go to the lungs; food and beverages must go to the stomach. The throat must be arranged so that swallowing and breathing do not interfere with each other. How does the human body resolve this?
What will be an ideal response?
When a mouthful of food is swallowed, it passes through the pharynx, a short tube shared by both the digestive system and the respiratory system. To bypass the entrance to the lungs, the epiglottis closes off the airway so that choking does not occur when swallowing
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Which of the following is true about vitamins A, D, E, and K?
A. They are excreted in the urine. B. They can all be synthesized by the body. C. They are unlikely to build up to toxic levels in the body, even when taken as supplements. D. They are soluble in fat.
Strict adherence to a high-protein, muscle-enhancing diet is one characteristic of the female athlete triad
Indicate whether the statement is true or false
The body needs folate to produce a coenzyme that ________.
A. protects fatty acids from oxidation B. helps form DNA C. transmits nervous impulses D. metabolizes vitamin E
_______________ burns destroy all layers of the skin and can involve underlying muscle, organs, and bone.
Fill in the blank(s) with the appropriate word(s).