Regarding the placental blood supply, blood that bypasses the liver capillaries reaches the inferior vena cava within the
A) umbilical vein.
B) ductus arteriosus.
C) pulmonary trunk.
D) foramen ovale.
E) ductus venosus.
E) ductus venosus.
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Some of the air that enters the lung but does not participate in gas exchange is called the
A) Dead space. B) Void volume. C) Tidal waste. D) Residual volume.
Which of the following would make the oxygen-hemoglobin curve shift right?
A) increased pH B) increased H+ concentration C) decreased temperature D) decreased CO2 E) None of the answers are correct.
Odorant receptors are
A) Carbohydrates. B) Proteins. C) Nucleic acids. D) Lipids.
The sodium-potassium pump uses ATP to move sodium and potassium ions across the plasma membrane. This statement describes _____.
A)facilitated diffusion B)secondary active transport C)exocytosis D)simple diffusion E)primary active transport