Muscular System
By: Rylie Burden
Skeletal Muscle
- Origin is one end of the muscle, attached to the less movable part of the bone
- Insertion is the other end of the muscle, attached to the more movable part of the bone
- The action, or body, is the thick middle part of the muscle
- Spans joints and attached to skeleton
- Spindled shape
- Controlled by CNS
Smooth (Visceral) Muscle
- Lines various hollow organs
- Makes up the walls of blood vessels
- Found in the tubes of the digestive system
- Smooth and has no striations
- Controlled by the autonomic nervous system
- No striations
- Lines the walls of viscera and hollow walls of organs
- involuntary movement
- spindle shaped
- Controlled by ANS
Cardiac Muscle
- Found only in the heart
- Striated muscle
- Under involuntary control
- Has specialized cells that provide a stimulus for contraction
- Known as a branching cell
- involuntary movement
- main muscle of heart
- spindle shaped
- cells are striated
- Regulated by ANS