481319198-Physical-Education-Skeletal-system-pptx[1].pptx

skeletal system

1. Physical Education Topic: The Skeletal System

2. The Skeletal System The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together .

3. Major bones of the Skeletal System

4. What are the 5 Functions of the Skeletal System? 1. Movement: Skeletal system provides points of attachment for muscles. Your legs and arms move when the muscles pull on the bones. 2. Support: The backbone is the main support center for the upper body. It holds your head up and protects your spinal cord. Muscle attached to bones!!

5. What are the 5 Functions of the Skeletal System? 3 . Protection: The bones of your skull protect your brain. Your ribs protect your lungs and heart from injury. 4. Makes Blood: Red and white blood cells are formed by tissue called marrow, which is in the center of the bone .

6. What are the 5 Functions of the Skeletal System ? 5. Storage: Bones store minerals, such as calcium and phosphorus, for use by the body

7. What are the Two Major Skeletal System Parts? Axial Skeleton : The axial skeleton includes the skull, spine, ribs and sternum. Appendicular Skeleton : The appendicular skeleton includes the appendages of the body, which are the shoulders, arms, hips, and legs .

8. What are the Basic Bone Shapes ? Four basic bone shapes: 1. Long- arms, legs and fingers 2. Short- wrist and ankles 3. Flat- skull and sternum 4. Irregular- spine

9. The Bones of the skeletal System

10. Clavicle or Collarbone The clavicle , or collar bone, holds the shoulder joint away from the rest of the upper body and is only as thick as your little finger.

11. Scapula The scapula is located on the back side of the ribcage and helps provide part of the shoulder joint and movement for the arms.

12. Vertebral Column or Spinal Cord 1) The cervical region (neck bones)    2) The thorasic region (what the ribs attach to) 3) The lumbar region (the lower part of the back)  

13. Coccyx and Sacrum

14. Humerus (Upper Arm Bone)

15. Radius and Ulna Radius on Top Ulna on Bottom

16. Carpals or (Wrist Bones)

17. Metacarpals (Top of Hands)

18. Phalanges (Little Fingers )

19. Rib Cage

20. Sternum (Breastbone)

21. Pelvis

22. Femur (Largest Bone in the Body )

23. The Tibia and Fibula

24. Tarsals

25. Metatarsals

26. Phalanges

27. What are Joints? A joint is a place where two bones come together. Joints allow the bones to move in different ways. Two types of joints: Immovable Movable

28. What are Immovable Joints? A joint that allows little or no movement

29. What are Movable Joints? Most of the joint are movable joints. Allow the body to move in a wide range of movements. Bones in movable joints are held together by strong connective tissue called ligaments . Four types of movable joints: Hinge Ball-and-socket Pivot Gliding

30. What is a Ball-and-Socket Joint ? Round end of bone fitting snuggly within another bone. Ex. Shoulder and Hip Allows the greatest range of motion. The ball-and-socket joint allows you to swing your arm freely in a circle.

31. What is a Hinge Joint? Movement in one direction like a door. Ex. Knee and Elbow Allows forward or backward motion.

32. What is a Pivot Joint? Bone resting atop another bone permitting free movement. Ex. Neck, Wrist and Ankles Allows one bone to rotate around another. Allows you to turn your head

33. What is a Gliding Joint? Allows one bone to slide over another. Ex. Knuckles, wrist , ankle Allows your to bend and flex as well as make limited side to side motions.

34. What is a Ligament? Connects bone to bone.

35. What is a Tendon? Attaches muscles to bones.