The optimal pH range for the stomach enzyme pepsin is
A. 7.3-7.4.
B. 10-12.
C. 12.0-13.5.
D. 6-8.
E. 2-4.
Answer: E
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What do the left common carotid, brachiocephalic artery and left subclavian all have in common?
A. The all are found in the abdominal cavity B. They all carry blood to the head. C. They are coronary vessels. D.
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Fill in the blank(s) with the appropriate word(s).
The most active phagocytic cells found in circulating blood are____
Fill in the blank(s) with the appropriate word(s).