The prime extensor of the elbow joint is the
A. brachioradialis.
B. deltoid muscle.
C. biceps brachii.
D. brachialis.
E. triceps brachii.
Answer: E
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Why do inhaled foreign objects lodge more frequently in the right main bronchus than the left?
A. The right main bronchus is longer than the left. B. The right main bronchus is more horizontal than the left. C. The right main bronchus angles more sharply from the trachea. D. Objects tend to be drawn toward the left main bronchus because air pressure is slightly lower in the left lung. E. The right main bronchus is wider and more vertical than the left.
Which answer is true about NET water movement between two solutions that are separated by a semipermeable membrane
a. It will always be toward the solution with the lower osmotic pressure. b. It might be toward the solution with the lower osmotic pressure. c. It will always be toward the solution with the lower hydrostatic pressure. d. It might be toward both solutions at the same time. e. None of the above statements are true.
Which of the following is not true for ventricular systole?
a. Blood flows through the aorta and the pulmonary trunk. b. The semilunar valves open. c. The ventricles contract. d.The ventricles relax. e. The atrioventricular valves close.
Blood in the superior vena cava will enter the _____
A. aorta B. right atrium C. pulmonary trunk D. pulmonary arteries E. pulmonary veins