Gas emboli may occur because a ________.
A) person holds his breath too long
B) diver holds his breath upon ascent
C) pilot holds her breath upon descent
D) person breathes pure oxygen in a pressurized chamber
B) diver holds his breath upon ascent
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Myoglobin is a molecule within muscle cells that can bind
A. creatine phosphate. B. oxygen. C. hemoglobin. D. acetylcholine. E. ATP.
Which chamber of the heart forms the apex?
A. right atrium B. right ventricle C. left atrium D. left ventricle
Which of the following is/are part of the respiratory zone of the respiratory system?
A. Pharynx B. Alveoli C. Lungs D. Bronchi
A transplant recipient may be able to eventually discontinue immunosuppressant drugs if
A. the donor and recipient are both under age 30. B. the recipient receives bone marrow stem cells from the donor. C. the transplanted organ is not vital. D. the recipient receives a well-matched transplant from the donor.