Cell bodies of the peripheral nervous system are located in
A. ganglia.
B. nerves.
C. Schwann cells.
D. the sensory division.
E. the motor division.
Answer: A
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During the isovolumetric phase of ventricular systole:
a. the ventricles are contracting isometrically. b. the atrioventricular valves and semilunar valves are closed. c. blood is ejected into the great vessels. d. the ventricles are relaxing. e. both (a) and (b) above.
What capillaries come off of the efferent arterioles associated with cortical nephrons?
A) glomerulus B) vasa recta C) peritubular D) arcuate E) lobular
Skeletal muscle can be tetanized; can heart muscle also be tetanized? Why or why not?
A) Yes, extrasystoles are evidence of tetanus. B) Yes, all muscle can be tetanized. C) No, heart muscle does not show summation and tetanus because of the long refractory period of cardiac muscle cells.
What structure separates the right ventricle from the left ventricle?
A. Anterior interventricular sulcus B. Interventricular septum C. Interatrial sulcus D. Coronary sulcus