In the air we breathe, which gas is found in the highest concentration?
A) Nitrogen
B) Carbon dioxide
C) Water vapor
D) Hydrogen
E) Oxygen
A
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A) debris filter. B) mucus escalator. C) respiratory rhythmicity center. D) smooth slick surface allowing particles to slide. E) increased surface area for gas exchange.
The study of tissues is ________.
A. histology B. microbiology C. surface anatomy D. molecular biology E. cytology
Monocytes
a. are the first phagocytes to exit the blood and arrive at an injured or invaded area b. swell and mature into macrophages after exiting the blood c. act as opsonins d. have all of the above characteristics e. have characteristics a and b
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A. decreased stroke volume B. vasodilation C. decreased respiration D. vasoconstriction