For antagonistic muscle groups to move a limb, flexor contraction occurs coincident with
A) contraction of the tendon.
B) relaxation of the extensor.
C) no changes in the extensor.
D) contraction of the extensor.
B) relaxation of the extensor.
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The diaphragm is a large sheet of smooth muscle that separates the thoracic cavity from the abdomen.
Answer the following statement true (T) or false (F)
Bones that are relatively long and slender, consisting of a shaft with two ends are
A) long bones. B) flat bones. C) sesamoid bones. D) short bones. E) irregular bones.
This is the area where pyloric stenosis occurs
a) E b) F c) G d) B e) I
Which of the following is a factor that affects the velocity and duration of muscle contraction?
A) number of muscle fibers stimulated B) muscle length C) size of the muscle fibers stimulated D) load on the fiber