Hydroxyurea is a common drug treatment for sickle cell anemia patients. Hydroxyurea improves sickle cell symptoms because it
A) causes more hemoglobin alpha chains to be produced improving oxygen transport.
B) causes more hemoglobin beta chains to be produced improving oxygen transport.
C) increases the free iron in plasma.
D) stimulates the production of fetal hemoglobin improving oxygen transport.
E) increases the production of heme.
D
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During abdominal surgery, the surgeon makes a cut lateral to the linea alba. The muscle that would be cut is the
A) digastric. B) external abdominal oblique. C) rectus abdominis. D) scalenus. E) splenius.
What triggers erythropoietin release?
A) decreased blood oxygen levels B) damage to a blood vessel wall and subsequent exposure of collagen C) infection in the tissues D) increased blood carbon dioxide levels E) infection in the blood
As you work your quads, you notice that the tissue in that part of the leg is pinker (flush with increased blood flow). What has caused this increase in blood flow to the quads?
A. an increase in the oxygen concentration in the tissue. B. an increase in carbon dioxide concentration in the tissue. C. the constriction of precapillary sphincters in the capillary beds of the muscle. D. the overall decrease in the temperature of the muscle tissue as the muscles contract. E. a rise in the pH of the blood and interstitial fluid of the muscle.
Which of the following is not a process in urine formation?
A. Excretion B. Filtration C. Reabsorption D. Secretion