Muscular System

Front

What is the basic contractile unit of a muscle fiber?

Back

The basic contractile unit of a muscle fiber is the sarcomere.

Front

What is one function of the muscular system besides movement?

Back

The muscular system generates body heat.

Front

Which type of muscle is primarily voluntary?

Back

Skeletal muscle is primarily voluntary.

Front

What happens to a muscle when it gets smaller due to lack of use?

Back

When a muscle gets smaller due to lack of use, it is called atrophy.

Front

What is the role of the sarcolemma in muscle fibers?

Back

The sarcolemma is the cell membrane of a muscle fiber that helps maintain the environment of the muscle cell.

Front

What type of muscle is responsible for involuntary movements?

Back

Cardiac and smooth muscles are responsible for involuntary movements.

Front

What is hypertrophy in the context of muscles?

Back

Hypertrophy is the increase in muscle size due to exercise or increased workload.

Front

What is the function of tendons in the muscular system?

Back

Tendons connect muscles to bones, allowing for movement.

Front

What is the difference between skeletal and smooth muscle?

Back

Skeletal muscle is striated and voluntary, while smooth muscle is non-striated and involuntary.

Front

What is muscular fatigue?

Back

Muscular fatigue is the decline in ability of a muscle to generate force.