Muscular System.

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Presentation transcript:

Muscular System

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

There are 3 types of muscle tissue Skeletal Cardiac Smooth

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

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)