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Ch.22 Science
Skeletal System
| Skeletal System is made up of | Bone, cartilage, and connective tissue |
| Number of baby bones | 300 |
| Number of adult bones | 206 |
| Fused skeletal at the age of | 25 |
| Axial Skeletal | Skull, vertébral column rids, and sternum |
| Appendicular Skeletal | Arms legs shoulders, hip bones, wrists, ankles, fingers, toes, etc. |
| Help makes blood cells | Morrow |
| Compact bone | No visible spaces |
| Spongy bone | Many open spaces |
| Soft tissue in bone | Morrow |
| Red morrow produce what blood cells. | Red and White Blood cells |
| Yellow morrow in the central cavity stores... | Fat |
| Where two or more bones meet | Joints |
| Joints are often held together by | Ligaments |
| Thick bands of connective tissue that attach muscles to bone. | Tendons |
| Gliding Joints | Bones to glide over one another |
| Ball and Socket Joints | Move in all directions |
| Hinge Joints | Flex and extend |
| Pivot Joints | Turn head |
| Immovable Joints | Bones fused together |