You have decided to ascend to the summit of Mount Everest where the partial pressure of oxygen in the atmosphere has been estimated to be about 54 mmHg. Once you breathe in this air, the partial pressure of oxygen in the alveoli drops even lower, due to displacement by the partial pressure of carbon dioxide and water vapor. The arterial concentration of oxygen at the pulmonary capillaries is measured and found to be 25 mmHg. What is the percent saturation of hemoglobin at this partial pressure?
A. 98%
B. 83%
C. 18 %
D. 45%
Answer: D. 45%
Anatomy & Physiology
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The center portion of a long bone is called the .
Anatomy & Physiology
Where does an embryo usually attach to its mother?
A) To the lining of the vagina B) To the lining of the uterine tube C) To the endometrium D) To the perimetrium E) To the myometrium
Anatomy & Physiology
What is the term used when any other part of the conduction system other than the SA node is setting the pace of the heart?
A. Arrhythmia B. Ectopic focus C. Vagal tone D. Nodal rhythm
Anatomy & Physiology
True or False? The number of erythrocytes in a milliliter sample of blood is the same as the number of leukocytes in a milliliter sample of blood.
Answer the following statement true (T) or false (F)
Anatomy & Physiology