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Bones and Joints 1

Bones and Joints 1

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Bones and Joints 1

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  1. Bones and Joints 1

  2. The Skeletal System

  3. Bone is a tissue, a living material made up of cells, and is it full of capillaries. • The skeletal system is made up of bones which are connected to each other by joints. • Almost all bones have at least one joint. Muscles are fibres that have the ability to contract so that we can move our bodies and internal organs. • All these elements make up the musculoskeletal system whose function it is to allow us to perform movement.

  4. 4 types of bones based on shape

  5. General Structure of the Human Body • 3 Anatomical regions of the body: • Head • Trunk • Limbs

  6. 16 15 17 18 19

  7. How many bones are there in the human skeleton? • How many bones in a newborn’s skeleton? • Why the difference?

  8. How many bones are there in the human skeleton? 206 • How many bones in a newborn’s skeleton? 270 • Why the difference? During development, your bones fuse together

  9. Give examples of bones that fuse during development. • http://www.pennmedicine.org/encyclopedia/em_DisplayAnimation.aspx?gcid=000112&ptid=17

  10. Where are your organs in relation to your skeletal system?

  11. The Skeletal System Function • forms an internal, living framework that • provides shape and support • protects internal organs • moves body • forms blood cells • stores calcium and phosphorous compounds for later use

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

  13. Joints • Kept far enough apart by a thin layer of cartilage so that they do not rub against each other as they move • When this happens it can cause swelling at the joint and create symptoms of arthritis. • Bones are held in place at joints by a tough band of tissue called ligament

  14. Types of Joints • Fixed • Skull • Pelvis • Semi-movable • Vertebral column • Moveable • Pivot • Ball & socket • Hinge • Gliding

  15. Types of Joints • Ball and Socket Joint • Bone with a rounded end that fits into a cuplike cavity on another bone •  ex: shoulder joint: scapula to humerus http://www.shockfamily.net/skeleton/JOINTS.HTML

  16. Types of Joints • Pivot Joint • One bone rotates in a ring of another bone that does not move • ex: radius and ulna • ex: neck joint http://www.funhousefilms.com/b-pivot2.jpg

  17. Types of Joints • Hinge Joint • Back-and-forth movement like hinges on a door •  ex: elbow joint (humerus into radius) http://www.shockfamily.net/skeleton/JOINTS.HTML

  18. Type of Joints • Gliding Joint • One part of a bone slides over another bone •  ex: carpals into metacarpals http://www.shockfamily.net/skeleton/JOINTS.HTML

  19. Video- joints • http://www.youtube.com/watch?v=ecRoUeL5k6E • http://www.youtube.com/watch?v=sW3-9zM9ohE