Which of the following provides mechanical contraception?
A. Combined hormone contraceptives
B. The minipill
C. A diaphragm
D. The rhythm method
Answer: C
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Birds ________ to clean feather debris and distribute oil from the uropygial gland
Fill in the blank(s) with correct word
In the blood is
a. the pressure exerted by the amount of oxygen dissolved in the blood b. the most important factor determining the percent saturation of hemoglobin c. normal in carbon monoxide poisoning d. only a and b e. a, b, and c
Multiunit smooth muscle cells
A. generally have individual innervation of each cell. B. have many gap junctions between cells. C. respond to stretch by relaxing. D. can only be excited, and not inhibited. E. have abundant T-tubules.
Which vitamin is required for the normal synthesis of collagen?
A. Vitamin A B. Vitamin K C. Vitamin C D. Vitamin D E. Vitamin B