The leukocyte that is very active during a bacterial infection is the
A. eosinophil.
B. lymphocyte.
C. basophil.
D. neutrophil.
E. monocyte.
Answer: D
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The countercurrent mechanism of the kidney enables the formation of hypertonic urine.
Answer the following statement true (T) or false (F)
Which of the following will not increase stroke volume?
a. increased end-diastolic volume b. increased contractility of the heart c. increased end-systolic volume d. increased stretch of the cardiac muscle fibers during ventricular filling e. increased venous return
For girls, menarche is usually the first sign that puberty has begun.
Answer the following statement true (T) or false (F)
Which of the following statements about the regulation of the glomerular filtration rate (GFR) is FALSE?
Elevation of blood pressure increases the GFR. Renin is released when the GFR is low. Constriction of the afferent arteriole increases the GFR. Constriction of the efferent arterioles increases the GFR.