The skeletal system has many important purposes. It provides our body's shape and form, it protects our organs, stores minerals such as calcium,iron and bone marrow, and it allows bodily movement. The skeletal system has 206 bones in it that form the framework in which the organs and the softer tissues are attached. There are two distinct parts of the skeletal system. They are: The axial and the appendicular system. The axial skeleton is made of bones that form the axis of the body,support and protect the organs of the head and neck (the skull, sternum, ribs, and vertebral column). The appendicular skeleton is made of bones that anchor the appendages to the axial skeleton (The upper and lower extremeties, shoulder girdle, and the pelvic girdle).
LONG BONES FLAT BONES IRREGULAR BONES
There are many joints in the skeletal system. These joints include the ball-and-socket joints, ellipsoidal joints, pivotal joints, and hinge joints.
The four types of bones in the body, include: Long bones, Short bones, Flat bones, and Irregular bones. Long bones are longer than wide and work as levers. (The bones in the Upper and Lower extremeties are Long bones.) Short bones tend to be shaped like cubes, short, and mostly found in the wrists and in the ankles. Flat bones have broad surfaces that protect organs and the attachment of muscles. (Flat bones include the ribs, the cranial bones, and the bones located in the shoulder girdle.) Irregular bones are the bones that do not fall into any category and vary in shapes, sizes, and surfaced features. ( There are a few bones and the skull and the bones of the vertebrae are Irregular Bones.)
LONG BONES FLAT BONES IRREGULAR BONES
There are many joints in the skeletal system. These joints include the ball-and-socket joints, ellipsoidal joints, pivotal joints, and hinge joints.
BALL-SOCKET JOINTS PIVOT JOINTS HINGE JOINTS
ELLIPSOIDAL JOINTS
This is a video showing the functions of the skeletal system.
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