1. The Muscular System
14.2

2. Functions of the Muscular System
Muscular system provides movement, protection, stability and maintaining body temperature.
Muscle – is a strong tissue that can contract in an orderly way.
Contraction occurs when the muscles cells become shorter. Relaxation occurs when the cells return to the original length.

3. Movement
Muscles are attached to bones which allow the skeleton to move.
Some muscles are not connected to bones.
Contractions in those muscles cause blood and food to move throughout the body.

5. Stability, Protection, & Temp. Regulation
Muscles attached to bone supports your body & help with balance.
Tendons attach to bone help joints stay in place during movement.
Muscles provide protection by covering organs.
Shivering is when muscles contract rapidly and change chemical energy to thermal energy.

6. Types of Muscles

7. Healthy Muscles All muscles require energy to contract.
Protein, Fiber and Potassium help keep your muscles strong.
Exercise also keeps muscles strong.
Decreased muscle strength can increase the risk of heart disease and bone injuries.

8. The Muscular System and Homeostasis
Cardiac muscles help your heart maintain homeostasis
Exercising requires more oxygen for cellular processes and releases more carbon dioxide as waste.