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Science ch 2
lesson 1
| Term | Definition |
|---|---|
| What does the skeleton do? | provides shape and support, enables you to move, protects your organs, produces blood cells , and stores minerals and other things |
| skeleton | bones that make up your body |
| vertebrae | 26 bones that make up your back bone |
| What role doe joints play? | joints allow bones to move in different ways |
| joints | place where 2 bones meet |
| immovable joints | connect bones but allow little or no movement |
| movable joints | allow body to move differently and made up of ligaments |
| ligaments | made of strong connective tissue and hold together the movable joints |
| What are the characteristics of bones? | complex living structures that grow and repair themselves and are lightweight. |
| compact bone | hard and dense but not solid, found beneath the membrane |
| spongy bone | lightweight but strong, under the compact bone |
| marrow | connective tissue |
| yellow bone marrow | found in a space in the middle of bone and stores fat |
| red bone marrow | fills the spaces in some spongy bone and produces most of blood cells |
| cartilage | strong connective tissue fore flexible then bone |
| osteoporosis | condition in which bones become weak and break easily |
Created by:
Ella!
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