Microorganisms that normally live within or on the human body are collectively called ________.
A. cancer cells
B. normal flora
C. epithelial cells
D. white blood cells
Answer: B
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Adjustment to close-range vision involves all of the following except ________.
A. ciliary muscle activity B. light adaptation C. activity of the extrinsic eye muscles D. constriction of the pupil E. change in the curvature of the lens
Atoms in a covalent molecule
A) share electrons in triple pairs. B) share electrons in double pairs. C) can share electrons in single pairs, double pairs, or triple pairs. D) share electrons in single pairs. E) share electrons singly, never in pairs.
The dicrotic notch on the aortic pressure wave is due to a disturbance caused by the closure of the ______ valve
Fill in the blank(s) with correct word
Which of the following hormones directly stimulates growth of muscle tissue and increased muscle mass?
A) Epinephrine. B) Thyroid hormone. C) Testosterone. D) Parathyroid hormone. E) Calcitonin.