Within the blood vessels, valves are found in the ________.
A. veins
B. capillaries
C. arteries
D. arterioles
Answer: A
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Artificial joints are built of
A. proteins for small joints and carbohydrates for large joints. B. silicone polymers for large joints and metals for small joints. C. silicone polymers for small joints and metals for large joints. D. glucosamine and chondroitin.
Which correctly describes functions of protein C?
A. It activates platelets and converts prothrombin to thrombin. B. It activates clotting factor XII and platelets. C. It binds to tissue factor and activates clotting factor VII. D. It inactivates thrombin and converts fibrinogen to fibrin. E. It inhibits clot formation and inactivates factors Va and VIIIa.
What is a lever?
A. The pivot point that does not move B. The force applied to lift the weight C. The weight to be lifted D. A rigid object used to lift something
Which of the following is not a result of testosterone's negative feedback effect on the hypothalamus?
A. Any further production of GnRH is inhibited. B. The overproduction of testosterone is prevented. C. FSH and LH production is increased. D. All of the answers are correct.