The Skeletal System

Functions Provides support for the body Protects internal organs & tissues Framework for muscles Allow movement of limbs & digits Produces new red & white blood cells Stores fat & minerals Ex. Calcium

Skeletal System Axial Skeleton 80 Bones Skull Spine Ribs Sternum

Skeletal System Appendicular Skeleton 126 Bones Shoulders Arms Hands Hips Legs Feet

Bones

Bones Long Bones- arms & legs Short Bones- wrists & ankles Flat Bones- skull & ribs Irregular Bones- vertebrae

Connective Tissue Cartilage- Acts as a cushion between 2 bones Babies skeletons are mostly cartilage Ossification- process by which bone is formed, renewed, and repaired Example (Keegan- “Toddler Break”)

Connective Tissue Ligament Bone to Bone Tendon Muscle to Bone

Joints Ball & Socket Joints- Shoulder & Hip Pivot- 1st Two Vertebrea Hinge- Fingers, Elbow, & Knee Ellipsoidal- Wrist

Keeping the skeleton healthy Good nutrition Calcium Vitamin D Phosphorus Physical activity Regular checkups

Fractures Hairline- No separation Transverse- Separation Comminuted- Shatters Compound- Thru skin

Injuries to joints Dislocation- Bone slips out Torn Cartilage- Twisting or sharp blow Bursitis- Inflammation of bursa sac Arthritis- Inflammation of joint

Other Problems Scoliosis- “S” curvature of the spine Osteoporosis- Bone become weak & brittle