1. Muscular System

2. MUSCLES Approximately 40% of your body weight
Approximately 650 muscles
Muscles only pull (they can’t push)
You have over 30 facial muscles
Eye muscles move more than 100,000 times a day

3. There are 3 types of muscle tissue
Skeletal
Cardiac
Smooth

4. Skeletal Muscles
Definition - organs that are composed mainly of skeletal muscle tissue, but they also contain connective tissues, nerves, and blood vessels.
Each cell is a single muscle fiber.
Muscle fibers form bundles called fascicles.
Directly or indirectly attached to the bones of the skeleton

5. Skeletal Muscle Functions
Muscle plays six important roles in the body:
Produce skeletal movement
Maintains posture and body position
Support soft tissues (abdominal wall & pelvic cavity)
Guard entrances and exits (digestive and urinary tracts)
Maintain body temperature (energy is converted to heat)
Store nutrient reserves (proteins are broken down & amino acids are used)