Platelet aggregation is reinforced by what signal?
a. ADP
b. fibrinogen
c. thromboxane
d. prostacyclin
e. thrombopoietin
C
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The papillary muscles attach to the cusps of the atrioventricular valves by means of the
A. pectinate muscles. B. trabeculae carneae. C. conus arteriosus. D. tendinous cords. E. tricuspid valve.
Functionally, carbohydrates are most important as
A) storage of glucose molecules. B) a part of nucleic acid structure. C) sources of energy. D) receptors of the cell surface. E) insulation under the skin.
________ constitutes about 80% of circulating antibodies in plasma.
A. IgG B. IgD C. IgM D. IgA E. IgE
Which muscle do you contract when you compress the anterior abdominal wall?
A. External oblique B. Internal oblique C. Transversus abdominis D. Rectus abdominus E. All of these