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Science ch 2

lesson 1

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!