Which of the following labeled panels in the figure shows flexion?
a) E
b) F
c) C
d) G
e) H
c
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The triceps brachii helps the pectoralis major flex the arm. In this example the triceps is which of the following?
A. An antagonist B. A fixator C. A synergist D. An agonist
The body system that provides support and protection as well as being a site of blood cell production (hemopoiesis) is the ____________ system.
A. skeletal ?B. muscular ?C. cardiovascular ?D. respiratory ?E. lymphatic
Which of the following pacemaker cell populations has the fastest intrinsic rate of depolarization at about 60-70 times or more per minute?
A) atrioventricular (AV) node B) Purkinje fiber system C) atrioventricular (AV) bundle D) sinoatrial (SA) node
Which of the following has the largest mitochondria?
A. Fast glycolytic fibers B. Smooth muscle C. Slow oxidative fibers D. Intermediate fibers E. Cardiac muscle