What is a diagnostic test used to assess how the muscle responds?
A. ECG
B. EEG
C. EKG
D. EMG
Answer: D
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Alpha motor neurons innervate ________.
A. nuclear bag fibers B. nuclear chain fibers C. extrafusal fibers D. intrafusal fibers
A person has alkalosis if the blood pH
A. is below 7.0. B. drops below 7.3. C. rises above 7.5. D. is above 7.0.
One type of experimental contraceptive device is a skin patch that contains a chemical absorbed through the skin. Which of the following substances might be the type of chemical involved?
A. Carbohydrates B. Water-soluble substances C. Amino acids D. Proteins E. Lipid-soluble substances
Oil spilled into the ocean does not easily disperse, but rather clumps into an oil slick. Which of the following explains why this occurs?
A. Oil is composed mainly of hydrophilic molecules. B. Oil is composed mainly of nonpolar molecules. C. Oil has no hydrogen in its molecular structure, so it can't form hydrogen bonds with water. D. Water is hydrophobic. E. Electrons are shared unequally between carbon and hydrogen atoms.