Gross Anatomy of a Muscle

Front

What covers a fascicle?

Back

Perimysium.

Front

The muscle cell is also known as _____________.

Back

Muscle fiber.

Front

What is a sarcomere?

Back

The basic contractile unit of muscle contraction.

Front

The connective tissue that covers the muscle cell or muscle fiber is called _____________.

Back

Endomysium.

Front

What is the name of the connective tissue that surrounds the entire muscle?

Back

Epimysium.

Front

What is the primary function of tendons?

Back

To connect muscles to bones.

Front

What are myofibrils?

Back

Long, thread-like structures within muscle fibers that contain the contractile proteins.

Front

What is the role of actin in muscle contraction?

Back

Actin is a protein that forms thin filaments and interacts with myosin to facilitate muscle contraction.

Front

What is the role of myosin in muscle contraction?

Back

Myosin is a protein that forms thick filaments and interacts with actin to facilitate muscle contraction.

Front

What is the function of the sarcoplasmic reticulum?

Back

To store and release calcium ions during muscle contraction.