What is systemic arterial oxygen tension (PO2) in a healthy young person breathing room air at sea level?
A. 40 mm Hg
B. 46 mm Hg
C. 100 mm Hg
D. 150 mm Hg
E. 760 mm Hg
Ans: C. 100 mm Hg
Anatomy & Physiology
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Which of the abdominal muscles does not insert on the linea alba?
A. External oblique B. Transversus abdominis C. Rectus abdominis D. Internal oblique E. No exceptions; all choices insert on the linea alba.
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The technical term for chewing is
A) mastication. B) deglutition. C) peristalsis. D) segmentation. E) borborygmus.
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Cold temperatures (below 36 °C) denature proteins, which is why biochemistry labs never freeze enzymes
Indicate whether this statement is true or false.
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Edema is
A. swelling of lymph nodes due to infection. B. swelling due to excess tissue fluid. C. infection of a lymphatic vessel. D. cancer of lymphoid tissue.
Anatomy & Physiology