Get out ISN we are taking notes

1. Get out ISN we are taking notes • Content Objective: Students will demonstrate comprehension of structure and function of the skeletal system by writing about what they learn during the powerpoint. • Language Objective: Student will read about structure and function of the skeletal system and write examples for the types of bones and joints found in the body. • Quiz Friday • Independent study projects due Next week. • Need your Science Fair permission forms By Friday!!

2. Independent Study Projects Due Next Friday Counts as a test grade failure to turn in results in a zero as a test grade!! 1st Period • IriAmin Holguin • Daniela Mendoza • Tristan Yin 4th Period • Madilyn Davenport • Chyanne Gregg • Alecia Ramirez 5th Period • Kynnedy Flannel • Jack LeBato • Jose Moreno • Samantha Moreno • Dulce Sosa 6th Period • Paul Grundy 7th Period • Chris Gonzales • Cameron Lopez

3. The Skeletal System

4. The Skeletal System • Definition: • all the bones in the body

5. Living or Non-living? • LIVING- • Proof: cells are found in bones, and all living things are made up of cells.

6. The Skeletal System Function • forms an internal, living framework that • provides shape and support • protects internal organs • Attach muscles so that they can move • forms blood cells (bone marrow) • stores calcium and phosphorous compounds for later use

7. Bones • Made of layers of living tissue • Outer Layer: Covered with a tough, tight-fitting membrane called the periosteum

8. Compact Bone • FoundDirectly under the periosteum • Hard, strong layer Gives bones strength • Made of deposits of calcium phosphate • Contains bone cells and blood vessels

9. Spongy Bone • Located at the ends of long bones • Has many small, open spaces that make bones lightweight • It is filled with a substance called marrow • yellow composed of fat cells • red produces red blood cells

11. http://www.bmb.psu.edu

12. Cartilage • Smooth, slippery, thick layer of tissue • Thick soft tissue covers the ends of bones • Purpose: reduce friction b/w bones/acts as a shock absorber • Does not contain blood vessels or minerals which makes it unable to regenerate

14. Joints • Definition: • Any place where two or more bones come together

15. Joints • Bones at joints are separated by a thin layer of cartilage so that they do not rub against each other as they move • Bones are held in place at joints by a tough band of tissue called ligament

16. Types of Joints • Immovable • Skull • Pelvis • Moveable • Pivot • Ball & socket • Hinge • Gliding

17. Immoveable Joints • Allow little or no movement. • Examples: Skull, Ribs, pelvis

18. Types of Joints • Ball and Socket Joint • Bone with a rounded end that fits into a cuplike cavity on another bone • Examples: Hip and Shoulder http://www.shockfamily.net/skeleton/JOINTS.HTML

19. Types of Joints • Pivot Joint • One bone rotates in a ring of another bone that does not move • Examples: radius/ulnar joint, cervical joint (cranium on the cervical vertebra) http://www.funhousefilms.com/b-pivot2.jpg

20. Types of Joints • Hinge Joint • Back-and-forth movement like hinges on a door • Examples: Elbow, knees, fingers, toes http://www.shockfamily.net/skeleton/JOINTS.HTML

21. Type of Joints • Gliding Joint • One part of a bone slides over another bone • Examples: wrists, ankles, between vertebrae http://www.shockfamily.net/skeleton/JOINTS.HTML

22. Joint Problems • Arthritis- describes 100 different diseases of the joints. • All forms begin with the same symptoms in the joints • Pain • Swelling • Stiffness