Athletes abuse erythropoeitin (EPO) because it
A) increases the red blood cell supply, which depletes oxygen from muscle cells.
B) decreases the red blood cell supply, which brings more oxygen to muscle cells.
C) increases the white blood cell supply, which prevents infection.
D) increases the red blood cell supply, which brings more oxygen to muscle cells.
D
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The fibula is the major weight-bearing bone of the leg
Indicate whether the statement is true or false
In order for thrombin to be formed:
a. fibrinogen must be present b. sodium must be present c. potassium must be present d. calcium must be present
Bone cells called ________ break down bone by secreting hydrochloric acid and enzymes that dissolve the matrix.
A. osteoclasts B. osteoid cells C. osteocytes D. osteoblasts E. osteoprogenitor cells
Night blindness could be caused by
A. a lack of iodopsin. B. a lack of vitamin C in the diet. C. too much vitamin A in the diet. D. a lack of rhodopsin. E. a lack of cones.