Exam 9: The Muscular System

Describe the progression of Duchenne muscular dystrophy.

If a prime mover caused extension,the antagonist would cause flexion.

Bursae and tendon sheaths are lined with synovial membrane.

What makes up a motor unit and what is the neuromuscular junction?

When a person picks up a 5-pound weight,muscle cells contract less forcefully than when a person picks up a 20-pound weight.

Match each term with its corresponding definition or description. -moving part of the body away from the midline of the body

Tendons attach bone to bone.

In bending the elbow,the insertion is at the shoulder.

Match each term with its corresponding definition or description. -the movement that makes the angle between two bones at their joint smaller

Match each muscle with its corresponding description or location. -muscle on the back of the upper arm that is responsible for elbow extension

Lifting a book off the desk is an example of what type of contraction?

The muscle cells will contract slightly for a small stimulus and much more forcefully for a stronger stimulus.

Muscular dystrophy is a muscle disorder caused by a viral infection.

Dorsiflexion and plantar flexion refer to movements of the ankle that change the position of the foot.

Explain why Duchenne muscular dystrophy usually affects boys.

The triceps brachii and the biceps brachii

Match each muscle to its corresponding location or description. -muscle that makes up much of the substance of the buttock

Describe the three types of muscle tissue and explain where each is found.

Another name for visceral muscle is _____ muscle.

When a muscle cannot be supplied with enough oxygen,lactic acid is used to produce ATP.