24 Functions of the Skeletal System 1. Supports the body. The backbone is the main support center for the upper body. It holds your head up and protects your spinal cord. 2. Protects internal organs: The bones of your skull protect your brain. Your ribs protect your lungs and heart from injuryMuscle attached to bones!!
34 Functions of the Skeletal System 3. Works with Muscles to produce movement: Skeletal system provides points of attachment for muscles. Your legs and arms move when the muscles pull on the bones. 4. Makes Blood: Red and white blood cells are formed by tissue called marrow, which is in the center of the bone.
4Bone Structure Typical Four Layers: Periosteum: Compact Bone: Covers BonesCompact Bone:Lies beneath the periosteumSpongy Bone:Lies beneath the compact boneBone Marrow:Fills the gaps between the spongy boneSpongy BoneCompact BoneBone Marrow /Marrow Cavity
5Bones of the CraniumSome are thickerthan others!!!
6Cranium Bones Parietal Bone Parietal Bone Frontal Bone Temporal Bone Occipital Bone