1 / 11

The Skeletal System

The Skeletal System. Section 32.1. The Skeleton: Structure. Helps maintain shape Axial skeleton supports central axis of body. Rib cage, skull, vertebral column. Appendicular skeleton Arms, legs, pelvis, shoulders. The Skeleton: Function. Supports body Protects internal organs

lanelle
Download Presentation

The Skeletal System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. The Skeletal System Section 32.1

  2. The Skeleton: Structure • Helps maintain shape • Axial skeleton supports central axis of body. • Rib cage, skull, vertebral column. • Appendicular skeleton • Arms, legs, pelvis, shoulders.

  3. The Skeleton: Function • Supports body • Protects internal organs • Assists movement • Stores minerals • Forms blood cells

  4. Bones: Structure • Consist of… • Living cells • Protein fibers • Surrounded by calcium salts

  5. Bones: Development • Starts as cartilage in-vitro • Ossification occurs 7 months before birth. • Mineral deposits replace cartilage. • Bones have growth plate at the tips. • Will eventually ossify and growth stops.

  6. Bones: Remodeling and Repair • Bones continuously rebuilt/remodeled. • Osteoblasts • Old bone replaced by new. • Osteoclasts

  7. Joints • Place where one or more bones meet. • Contain connective tissue that hold bones together. • Bones move without damaging each other.

  8. Joints: Types • Immovable • Slightly moveable • Freely moveable

  9. Joints: Structure • Freely moveable • Cartilage covers surface where two bones meet. • Surrounded by fibrous joint capsule. • Has ligaments (outer) hold bones together • Synovial (inner) allows for sliding

  10. Joints: Injuries • ACL ligament tear. • Located between femur and tibia. • Damage can occur by rapid pivoting, leaping, forceful contacts. • Inflammation by excessive strain • Osteoarthritis • Wear and tear • Cartilage breaks down

More Related