The primary drive to breathe is elicited by which of the following?
A. reduced PCO2
B. increased PCO2
C. increased PO2
D. reduced PO2
Answer: B
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Circular folds are
A) ridges in the wall of the stomach. B) pleats in the lining of the small intestine. C) fingerlike projections on the surface of the mucosa of the small intestine. D) sacculations in the colon. E) abnormal structures formed by excessive pressure in the small intestine.
Which of the following is NOT a conducting zone action?
a) Clean air of debris b) Conduct air into the lungs c) Add water to air d) Warm air e) All of these are actions of the conducting zone.
Phlebitis and hemorrhoids are conditions involving
A. capillaries. B. veins. C. arteries. D. All apply.
A partly specialized cell that is the daughter of a stem cell is a(n) ________ cell.
Fill in the blank(s) with the appropriate word(s).