Membrane that covers several muscle fibers to form a bundle.

Tough connective tissue sheath that surrounds the entire muscle.

Connective tissue sheath that surrounds muscle fibers.

Long organelles in the myofibrils.

Found within sarcomeres and create the banding pattern.

Made up of actin filaments.

Made up of myosin filaments and contains ATPase.

Small, contractile units found in myofibrils.

Band created when think and thin filaments overlap.

Disappears when the muscle is contracted.

Band created when the thin filament crosses the Z disc.

Middle of the sarcomere.

Located on opposite ends of the sarcomere.

Specialized plasma membrane surrounding the muscle fiber.

Which label is the sarcolemma?

Which label is the muscle fiber?

Which label is the myofibril?

Which label indicates the sarcomere?

Which label indicates the filament composed of myosin?

Which label indicates the H-zone?

Which label indicates the I band?

Which label indicates the A band?

Is the muscle shown contracted or relaxed?

Is the muscle shown contracted or relaxed?