1. Skeletal System
Notes

2. Functions
Give Shape & Support
Protect soft organs
Regulate and store body minerals and fat
Produce red blood cells
Bone Tissue
Composed of bone cells embedded in a web of inorganic salts
(calcium & phosphorus)
IF starts as cartilage then may become
Compact or dense bone
Spongy or cancelous bone
Red marrow – found inside long bones
- makes red blood cells
Yellow marrow - inside other bones
- stores fat

3. Upper And Lower Extremities Humerous, Tibia, Femur, Ulna, Metacarples
Example: txtbk. Pp
Bone Types
Description
Examples
Long
Longer Then Wide
Works As Levers
Upper And Lower Extremities
Humerous, Tibia, Femur, Ulna, Metacarples
Short
Cube Shaped
Wrists, Ankles
Flat
Broad Surface
Protects Organs
Muscles Attach To
Ribs, Sternum, Cranial Bones, Bones Of Shoulder Girdle
Irregular
All Others That Don’t Fit previous Categories
Vertebrate, Few In Skull

4. Compact Bone compared to Spongy Bone
Dense
Hard
Found on outside of ones for protection
AKA – cancellous bone
Under the compact bone
Porous – full of holes
In most bones
Calcium
Phosphorous
collagen

5. Joint – where 2 bones come together
Joint Types
Joint – where 2 bones come together
Joint Type
Movement
Ball & Socket
Circular
Hinge
Back & forth
Pivot
Pivots
Gliding
Sliding
Cartilaginous
Immovable