health mrs. wagner. support your body give it shape work with muscles so you can move bones –...
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HealthMrs. Wagner
Support your body Give it shape Work with muscles so you can move Bones – store important minerals and
release them to the body
Axial Skeleton – bones in your head, your breastbone, your ribs and in your backbone
Appendicular Skeleton – All the other bones in your body
Cranium – thick, hard part of skull that encloses the brain and protects it
Jawbone – only bone in skull that can move Vertebrae – 33 bones in spinal column –
support head and give flexibility to neck and back. Protects spinal cord
Cartilage – tough, supportive tissue that is softer and more flexible than bone – separate individual vertebrae from each other
Arms, hands, feet, legs, hips and shoulders
Joints – point at which two bones come together
Ligaments – strong, fibrous bands hold bones together at moveable joints .
Immovable joints – cannot move –Cranium
Moveable joints - 4 types
1. Hinge – back and forth movement - Knees, elbow
• 2. Ball and Socket – movement in all directions- Shoulder
• 3. Pivot – Side to side- neck at vertebrae
• 4. Gliding – bones to slide over one another- wrists and ankles
206 in body Marrow – soft tissue inside of the bone –
Red blood cells produced Ossification – body replacing cartilage
with bone – born with cartilage – age 20 – 25
Fracture – break in the bone Dislocation – ends of the bones are forced
out of their normal positions in a joint Sprain – overstretched or torn ligaments or
tendons Torn cartilage – serious damage to the
cartilage that covers the ends of bones in a joint
Bursitis – painful irritation of the fluid-filled sac that cushions certain joints
Arthritis – joints become painful and swollen
Scoliosis – abnormal curvature of the spine – more common in girls – twists sideways
Osteoporosis – bones become weak and break easily due to a loss of calcium
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