Anatomy of a Skeletal Muscle

Front

What is the largest structure in the skeletal muscle hierarchy?

Back

Muscle fiber.

Front

What is the largest unit of skeletal muscle?

Back

Muscle.

Front

What is a myofibril made of?

Back

Many sarcomeres.

Front

Which myofilament is considered thick?

Back

Myosin.

Front

What structure wraps around a fascicle?

Back

Perimysium.

Front

What is the smallest contractile unit of a muscle?

Back

Sarcomere.

Front

What are the two main types of myofilaments?

Back

Actin and Myosin.

Front

What is the function of myosin in muscle contraction?

Back

Myosin interacts with actin to produce muscle contraction.

Front

What is the connective tissue surrounding individual muscle fibers called?

Back

Endomysium.

Front

What is the role of the perimysium in skeletal muscle?

Back

It surrounds and groups muscle fibers into fascicles.