Autoimmune diseases such as arthritis become more common as people get older. "Autoimmune" means that the immune system
A. no longer produces antibodies.
B. destroys the body's own tissues.
C. is incapable of initiating phagocytosis.
D. produces T cells but no B cells.
E. protects itself.
B
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The __________ is not found in the elbow.
A. humeroulnar joint B. humeroradial joint C. proximal radioulnar joint D. distal radioulnar joint E. anular ligament
The breakdown of glucose to yield carbon dioxide, oxygen, and ATP can be described as ________.
A. catabolic and exergonic B. anabolic and exergonic C. anabolic and endergonic D. anabolic and exothermic E. catabolic and endergonic
Your coach says that you really need more strength and endurance in your quads so you head to the gym to work that group of muscles. Which of the following blood vessels is most likely supplying that muscle group with oxygenated blood?
A. femoral artery B. femoral vein C. saphenous veins D. dorsalis pedis artery E. fibular or peroneal artery
What structure is known as the "pacemaker" of the heart because it starts the action potential that triggers each heartbeat?
A. atrioventricular (AV) node B. sinoatrial (SA) node C. Purkinje fibers D. Bundle of His (AV bundle)