Exam 9: The Muscular System

The extensor digitorum communis muscle extends the ____ joint in conjunction with the three extensor carpi muscles.​

​In the small intestine, smooth muscle is arranged in two layers: an outer longitudinal layer and an inner ____ layer.

The flexor digitorum muscles flex the ____.​

When lifting a weight, muscles become shorter and thicker but the tone or tension remains the same and is referred to as isometric contraction.​

Matching Match the description with the corresponding term.​ a.​sternocleidomastoid b.​pectoralis major c.​orbicularis oris d.​masseter e.​abductor pollicis f.​psoas g.​biceps femoris h.​quadriceps femoris i.​abductor pollicis j.soleus -​extends the great toe

Inflammation of a tendon is called ____.​

Muscles that raise a part of the body are called ____.​

If oxygen is not available to a muscle cell, pyruvic acid is changed to ____ and builds up in the muscle cell.​

The biceps femoris, the semitendinosus, and the semimembranosus muscles are also known as the ____.​

The action potential traveling down the T tubule causes the sarcoplasmic reticulum to release ____ ions into the fluids surrounding the myofibrils.​