Exam 6: The Muscular System

The mechanical force of contraction is generated by ________.

Explain how isometric and isotonic contractions differ, using examples of each.

Match the following: -The movement of a bone around its longitudinal axis

The point of muscle attachment to an immovable or less movable bone is known as the ________.

Which facial muscle is considered the "smiling" muscle since it raises the corners of the mouth?

The prime mover of arm abduction is the ________ muscle.

Abduction and adduction are antagonistic actions.

While doing "jumping jacks" during an exercise class, your arms and legs move laterally away from the midline of your body. This motion is called ________.

What must rush into a muscle cell to promote its depolarization?

Which one of the following is composed mostly of the protein myosin?

Smooth muscles stabilize joints of the skeleton.

A smooth, sustained contraction, with no evidence of relaxation, is called ________.

Jason injured his hamstring muscle group during football practice. He will be unable to perform ________.

Match the following: -Enzyme that breaks down acetylcholine (ACh)

According to the sliding filament theory, how does muscle contraction occur?

The condition of skeletal muscle fatigue can be best explained by ________.

Depolarization of a skeletal muscle cell leads to the opening of more channels that only allow potassium entry.

What types of movements are demonstrated by your arms and legs when you perform jumping jacks in physical education class? Describe these movements.

Striated involuntary muscle tissue found in the heart is ________.

Match the following: -Gap between the axon terminals and the plasma membrane of a neighboring muscle cell