The Skeletal System

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made up of number of bones fused together. The backbone is composed of 33 separate different size and shaped vertebrae, and each of them are composed of centrum (base portion), and neural arch (surrounds and protects spinal cord.) 12 pairs of flat bones make up the rib basket. Its function is to support the chest wall, and prevents it from collapsing, when the diaphragm contracts.

Appendicular Skeleton

Appendicular skeleton are made up of pelvic girdles (consists of 3 fused hipbones), pectoral girdles (consists of 2 collar bones - "clavicles"), and 2 scapulas (shoulder blades.)

The Joints:

There are 4 types of joints, the part of junction between 2 bones.

1. Ball and socket allows freedom of movement in several directions. It can be found between humerus & scapula; and femur & hipbone.
2. Hinge joint allows movements in a single plane. An example of this joint can be found in your knee.
3. Pivot joining allows freedom of movement of somewhat between ball and socket & ...

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are coated with cartilages, which reduce friction and cushion against jolts. Between the bones, in a narrow space, is the joint "cavity," which gives us freedom of movement. Ligaments then bind these bones to prevent dislocations and limit the joint's movements. The bones are held in position and controlled in movement by the ligaments. "Getting off on the wrong foot" or making a bad start is based on an ancient Roman superstition. They believed it to be bad luck to enter a house with the left foot first. The idea was so important to them that "footmen" were placed at the door to see that those entering would not misstep.

The Skeletal System
(Low Band Width)
What's below?
- Skeleton
- ...

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