Muscle Fiber Anatomy (VOCABULARY)

A single MUSCLE CELL

• Myofibril

• Muscle Fiber

• Sarcomere

• Sarcolemma

The contractile ORGANELLES that occupy most of the space inside of a muscle fiber.

• Muscle fiber

• Sarcoplasmic Reticulum

• Myofibril

• Sarcomere

The cell membrane of a muscle fiber.

• Sarcolemma

• Sarcoplasmic Reticulum

• Sarcomere

• Sarcoplasm

The connective tissue that wraps and binds all muscle.

• Fascicle

• Fascia

• Endomysium

• Perimysium

A layer of fascia that covers the OUTSIDE of the entire muscle.

• Epimysium

• Perimysium

• Endomysium

• Fascicle

A layer of fascia that covers the fascicles.

• Epimysium

• Perimysium

• Endomysium

• Myofibril

A layer of fascia that covers the individual muscle fibers.

• Epimysium

• Perimysium

• Endomysium

• Myofibril

The THICK protein filament

• Actin

• Myosin

• Calcium

• H-zone

The THIN protein filament

• Actin

• Myosin

• Calcium

• H-zone

The contractile unit of muscle; measured from Z to Z

• Sarcolemma

• Sarcoplasmic Reticulum

• Sarcoplasm

• Sarcomere