The major bones of the human body are very important and have major functions E.g. The vertebrae column allows us to bend, stretch and rotate our body without it we could not move in these ways.
Below is a labeled diagram of the skeletal system.
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Body in Action
There are different types of joints in the human body, joints are the place where two place meet. The joints hold your bones together and allow your rigid skeleton to move. Ball and socket joints a very mobile joint in the body, like your hip and shoulder joints, this joint allows you to swing your arms and legs in many different positions. This is the limit of the ball and sockets joint.
A type of that allows one part to rotate at almost any angle with respect to another. Ball-and-socket joints occur naturally, as in the human and joints, and are also used in machinery. Of all diarthrodial (fully moveable) joints in the , ball-and-socket joints are the most mobile and allow movement in three planes. Below is an image of a ball and socket joint (hip joint).
. Saddle joints enable you to grasp things. A saddle joint allows movement back and forth and up and down, but does not allow for rotation like a ball and socket. This is the limit of saddle joint.
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Pivot joint in your neck allows you to move your head from side to side. These are examples of your synovial joints. These different classifications of joints allow different movements; this is due to the shape and position of the synovial joints. E.g. The ball and socket joint is positioned in your hip and shoulder meaning it is capable to only move in many different positions meaning its very mobile. This is the limit of its movement. Below is a diagram of a pivot joint.
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A hinge joint in your knee and elbow is limited to only move the same way a door operates. A hinge joint allows extension and retraction of an appendage, this is the limit of its movement. Below is an image of the elbow it is a hinge joint.
Function of the axial and appendicular skeleton.
The 4 main functions of the Skeleton are
- Protection
- Support
- Movement
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Blood Cell Production