Which of these is demonstrated by the oxygen-hemoglobin dissociation curve?
A. As PO2 increases, the saturation of hemoglobin with oxygen increases linearly.
B. At normal resting systemic arterial PO2, hemoglobin is almost 100% saturated with oxygen.
C. At normal resting systemic venous PO2, only about 75% of the hemoglobin is in the form of deoxyhemoglobin.
D. More additional oxygen binds to hemoglobin when going from a PO2 of 60 to 100 mmHg, than is added when going from a PO2 of 40 to 60 mmHg.
E. The greater the PO2 of the blood, the greater the dissociation of O2 from hemoglobin.
Answer: B
You might also like to view...
The brachioradialis is named for its ________.
A. function and size B. origin and insertion C. type and shape D. location and size E. function and orientation
The systemic circuit carries ________ blood from the ________ to all parts of the body except the lungs and returns ________ blood to the ________.
A. deoxygenated; left ventricle; oxygenated; right atrium B. oxygenated; right ventricle; deoxygenated; left atrium C. oxygenated; left ventricle; deoxygenated; right atrium D. deoxygenated; right ventricle; oxygenated; left atrium
Ions are ________.
A. electrically neutral B. formed by the gain or loss of protons from the nucleus C. electrically charged D. nonpolar atoms E. not soluble in water
A dense layer of collagen fibers that surround the entire skeletal muscle is the
A. Epimysium B. Perimysium C. Endomysium D. Muscle Fibers