The growth rate for a scalp hair is about ________ per day for 1.5 to 7 years, and then the hair becomes dormant.
A. 1.3 cm
B. 3.1 mm
C. 1/30 mm
D. 1.3 mm
E. 1/3 mm
Answer: E
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How much blood does the average-sized adult have?
A. 2 liters B. 5 liters C. 4 liters D. 7 liters
Autoregulation is defined as:
A) reflex bradycardia that occurs secondary to systemic hypertension. B) an increase in mean arterial pressure to maintain cerebral blood flow. C) the forcing of cerebrospinal fluid into the spinal cord as intracranial pressure increases. D) a decrease in cerebral perfusion pressure that reduces intracranial pressure.
During clonal selection, most B cells become plasma cells, but others will become
A. antibodies. B. phagocytes. C. antigens. D. memory B cells.
Which of the following may result from emphysema?
A. Reduced gas exchange surface area B. Cor pulmonale C. Air trapping D. All of the choices are correct.