Abnormally low levels of white blood cells causes a condition known as ________
A) leukocytosis
B) anemia
C) thrombocytopenia
D) leukopenia
D
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The respiratory quotient is
a. the rate at which gases diffuse across the alveolar capillary membrane b. respiratory rate times tidal volume c. the ratio of O2 consumed to CO2 produced d. the ratio of CO2 produced to O2 consumed e. equal to 1.0 on a typical American diet
Autonomic fibers of the _______ nerve carry motor impulses to the heart and many smooth muscles and glands in the viscera of the thorax and abdomen.
A) abducens B) accessory C) trochlear D) vagus
How can you tell that the karyotype shown here is male?
A) The 23rd pair of chromosomes is XX. B) The 23rd pair of chromosomes is XY. C) The 23rd pair of chromosomes is YY. D) The 23rd pair of chromosomes is YO. E) There are only 22 pairs of chromosomes.
The blood vessels that are under the greatest pressure are the
A. arterioles. B. capillaries. C. elastic arteries. D. veins. E. venules.