The primary role of the carbonic-acid-bicarbonate buffer system is to
A) buffer stomach acid.
B) buffer carbonic acid formed by carbon dioxide.
C) limit pH changes caused by metabolic and fixed acids.
D) buffer the urine.
E) increase ventilation.
C
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The partial pressure of oxygen in atmospheric air at sea level is
A) greater than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. B) less than the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. C) equal to the partial pressure of oxygen in atmospheric air at the top of Mt. Everest. D) equal to the sum of partial pressures from carbon dioxide and nitrogen. E) equal to the partial pressure of carbon dioxide in atmospheric air at the top of Mt. Everest.
Which depicts the order of cell formation in erythropoiesis? a: Proerythroblastb: Normoblastc: Myeloid stem celld: Reticulocytee: Erythroblastf: Mature erythrocyte
A. c, a, b, e, d, f B. a, b, c, e, d, f C. c, a, e, b, d, f D. c, b, a, d, e, f E. a, c, d, b, e, f
The rough surface feature present along the lateral border of the shaft of the humerus is the
A) radial groove. B) medial epicondyle. C) lateral epicondyle. D) deltoid tuberosity. E) coronoid process.
What is the average value for mean arterial pressure (MAP)?
A) 120 mm Hg B) 150 mm Hg C) 80 mm Hg D) 95 mm Hg