If a sports beverage advertises that it replaces the body's electrolytes, what does the drink contain?
A. Vitamins
B. Lipids that form the membranes of cells
C. Sugars that were broken down for energy
D. Ionic forms of mineral elements
E. Oxygen and gases used by metabolism
Answer: D
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Which back muscle connects vertebrae to each other and helps maintain posture?
A. Splenius capitis B. Longissimus C. Multifidus D. Quadratus lumborum E. Semispinalis
When you swallow, the ____ prevents food from entering the trachea.
Fill in the blank(s) with the appropriate word(s).
Calcium that is needed to activate cross-bridging in smooth muscle mainly comes from ________.
A. extracellular fluid B. endoplasmic reticulum C. dense bodies D. intracellular fluid
Consistent with Boyle's law, air flows from a region of lower pressure (the atmosphere) into a region of higher pressure within the lungs.
Answer the following statement true (T) or false (F)