Post on 27-Dec-2015
How do all these bones work together?
They must be connected! Bone to bone = ligaments. Bone to muscle = tendons.
Supports weightAllows arteries andnerves to travel into bones
Protection
Support & shape
Contains red marrow
Fat
Makes blood cells
Shape and Support
Forms a framework that supports other organs and maintains body shape.
Think of what you would look like with no skeleton!
Ahhh!
Stores Materials
Storage of minerals such as calcium and phosphorus.
At times these reserves are used by tissue elsewhere in the body.
For example, when levels of calcium in the blood falls below a certain level, calcium is dissolved out of the bones and into the blood!
Parts of the Skeleton
Axial skeleton - skull, ribs and vertebrae.
Appendicular skeleton - all bones attached to axial; ex: arms, legs
What is Cartilage?
- strong, flexible tissue
- gives shape (nose)
- covers the ends of some bones (prevents bones from grinding against each other)
- shock absorber (in vertebrae - cartilage disks)
- before birth, the skeleton is made mostly of cartilage then cartilage is hardened with
calcium to make bones. This is called ossification.
Cranium
Mandible
Clavicle
Humerus
UlnaRadius
Phalanges
Femur
Patella
FibulaTibia
Tarsal (ankles)
Scapula
SternumRib
VertebraePelvis
Carpals
Phalanges
Hinge joint movement: bending, back and forth -
strong joint, allows people to lift heavy objects
(Ex: knee, elbow)
What is a sprain?
description - injury in which ligaments around a joint have been torn or stretched
cause – stress treatment – rest
What is a dislocation or fracture?
description – dislocation - bones move
out of their normal position in a joint
fracture - break cause - stress treatment - return to
normal position and immobilize