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Skeletal System
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- 2. Skeletal system -consists of bones that differ in size, shape, and function. It gives the shape and support to your body and protects some delicate body organs.
- 3. Two main groups Axialskeleton Is composed of bones that protect some delicate organs of the body. Appendicular skeleton Is consists of bones that provide support and together with muscle, make movement possible.
- 4. Axial skeleton Consists ofskull, backbone, breastbone, and ribs.
- 5. skull • My looklike one big bone, but actually it is composed of 29 bones. • Eight of these bones form a helmetlike case called cranium that protects the brain.
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- 8. Backbone/spine • It isattached to the base of the skull. • It consists of 26 irregularly- shaped bones called vertebrae. • The ringlike vertebrae together form a hollow tube that
- 11. Breastbone/sternum • The longand narrow breastbone is found at the middle of the chest. •It is attached to the cagelike flat, curved bones called ribs.
- 13. ribs • These are12 pairs of ribs, 10 pairs are attached to the breastbone while two pairs are not. • These two unattached pairs are called floating ribs. • The breastbone and the ribs encloses the heart and lungs.
- 15. Appendicular skeleton •Consists ofthe collar bones, shoulder bones and bones of the arms, hips, and legs.
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- 17. Shoulder blades/scapulae •The collarbones are attached to the shoulder blades.
- 19. Each arm is composedof three bones, one bigger in the upper arm and two smaller bones in the lower arm.
- 20. Humerus – isthe upper arm bone.
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- 22. Each hand has atotal of 27 bones from the wrist, palm, and fingers.
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- 24. pelvis •Attached to the backboneand joined together by cartilages at the front, the hip bones form a ring called pelvis.
- 25. Femur – longestbone in the body.
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