7. In a normal muscle which has been stimulated, which of thefollowing lasts the longest?

a. refractory period   b. latentperiod    c. action potential

d. period of contraction and relaxation (muscle twitch)

8. Which of the following would result in the smallest force ofcontraction following stimulation?

a. a muscle half its normal resting length

b. a muscle twice its normal resting length

c. a muscle that is at its normal resting length

d. a muscle in which the passive force greatly exceeds theactive force

9. Which of the following would be true about a muscle withmostly large motor units (as opposed to a muscle with mostly smallmotor units)?

a. controls movements much more precisely than a muscle withsmall motor units

b. contains a larger number of motor neurons

c. each neuron controls a large number of muscle fibers

d. muscles with large motor units contain only oxidativefibers

e. all of the above are true

10. Running a marathon or longterm maintenance of muscle tone(as opposed to sprinting or heavy lifting) would most depend on

a. utilizing creatine phosphate    b. anaerobicglycolytic metabolism

c. aerobic respiration

11. Which of the following would not be true about lacticacid?

a. produced when glycolysis occurs under anaerobicconditions

b. the more rapidly a muscle contracts the more lactic acid isproduced

c. produced by myoglobin

d. secreted into the blood

e. converted by the liver into glucose and glycogen