Opening Activity On the back of the notes paper, write down the names of as many muscles as you can, then score yourself according to the chart below. 8 or more -A 6 or 7 -B 4 or 5 - C Below 4D

7 th Grade Health Muscular System #1

Muscles are named by their:  Location  Movement  Shape  Number of Muscle Groups

Functions of Muscles  Movement  Gives shape to the body  Provides heat to the body

Muscle Types  Cardiac (Heart)  Smooth (Stomach)  Striated (Skeletal)

Muscle Movement  Muscles work in pairs  Muscles need nutrients  Muscles need oxygen  Muscles need nerve stimulation

Muscle Notes  Tendon – connects muscle to bone  Contraction – muscle becomes shorter or tightens  Origin – connection point where no movement occurs  Insertion – connection point where movement occurs

Body Movements  Flexion – angle at the joint becomes more acute  Extension – angle at the joint becomes more obtuse

Body Movements  Abduction – limb moves away from the body  Adduction – limb moves towards the body

Body Movements (con’t)  Supination – rotate so palm faces up (hold a bowl of soup)  Pronation – rotate so palm faces down

Body Movements (con’t)  Rotation – circular motion

Muscle Madness 1. Voluntary 2. Contraction 3. Smooth 4. Skeletal 5. Tricep 6. Fatigue 7. Tendons 8. Biceps 9. Insertion 10. Tone