1. Skeletal/ Muscular System

2. 1. Skeletal System a. Functions i.Support ii.Movement iii.Protection iv.Storage v.Blood cell production

3. b. Divisions of the Skeletal System a.Axial Skeleton 1.Protection 1.Skull 2.Ribs 3.Spinal column b.Appendicular Skeleton 1.Movement 1.Arms 2.Legs 3.hips

4. c. Types of Joints i.Immovable joints ii.Ball and socket iii.Hinge joints iv.Saddle joints

5. d. Components of Skeletal System a.206 bones b.Ligaments – hold bones together c.Tendons – attach bones to muscle

6. Muscular System a. types of muscle a.Skeletal – voluntary muscles that move the skeleton. Also called striated muscle b.Smooth – involuntary muscles that line the walls of arteries and some internal organs c.Cardiac – heart muscle

7. b. How do muscles work? i.Muscles pull (they do not push) ii.They work in antagonistic pairs

8. 3. What is an antagonistic pair? a. Every movable joint is controlled by at least two muscles that pull the bone in opposite directions