The acromioclavicular joint is part of the
A. sternum.
B. shoulder.
C. elbow.
D. neck.
E. cranium.
B
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Iodine accumulation in thyroid cells involves symport with
A) sodium. B) potassium. C) chloride. D) hydrogen.
The skin dissipates excess body heat by
A. radiation. B. dilating dermal blood vessels. C. activating eccrine sweat glands. D. all of the answer choices are correct.
Tom has a condition in which the endothelial lining of his blood vessels cannot secrete prostacyclin (PGI2). How will this affect his blood?
A. Prostacyclin is a clot-dissolving enzyme, so clots will not be broken down and Tom will be at risk for an embolism or thrombosis. B. Because prostacyclin is a clotting factor that encourages formation of platelet plugs, bleeding will not be slowed. C. Prostacyclin is involved in the activation of prothrombin, so the process of clotting will not be complete. D. Because prostacyclin prevents platelets from sticking to the inside of healthy blood vessels, Tom will experience clotting and general narrowing of the blood vessels.
Which of the following is not a part of the synovial joint?
A) joint cavity B) tendon sheath C) articular cartilage D) articular capsule