Muscular System Basics

Front

An organ system that consists of skeletal, smooth, and cardiac muscles; an organ system responsible for body movement.

Back

Muscular System

Front

An organ composed of muscle cells; main organ of the muscular system.

Back

Muscle

Front

Also known as muscle cells or cells within the muscles.

Back

Muscle fiber

Front

A fibrous connective tissue that attaches muscles to bones.

Back

Tendon

Front

Thin protein filament in myofibril.

Back

Actin

Front

Thick protein filament in myofibril.

Back

Myosin

Front

Basic contractile unit of myofibril; distance between two Z zones/discs.

Back

Sarcomere

Front

Muscles found only in the walls of the heart.

Back

Cardiac muscle

Front

Muscle tissues in the walls of internal organs.

Back

Smooth muscle

Front

Muscle tissues that are attached to bones; most common type of muscle.

Back

Skeletal muscle