A Guide to the Human Skeletal System

This is the right place to learn about the bones of the body and their importance. The explanation you get here will give you insight into the bones of the body and their roles in the grand scheme of things.

The skeletal system is the structure that gives the mechanical body support. The skeletal system supports the body. Movement is facilitated by the skeletal system.

The skeleton structure of the body is made up of the 206 bones, cartilage and the ligaments. So by learning about the skeletal system you would also learn about the bones.

The model of a skeleton structure shows the bones and the teeth; however, ligaments and cartilage are also there but not so visible. However, there are other structures that you will see if you pay close attention. The other basic parts of the skeleton apart from the bones is the ligaments and the cartilage.

Ligaments are vitally important for the proper functioning of the joints. Ligaments are basically the bands of dense and fibrous connective tissues. The cartilage makes up the structures of the nose and the larynx. A cartilage is a bit more flexible than the bone, but it has more strength than the muscles.

The bones give the body the structure and enables movement. The face gets the structure from the skull; the skull also protects the brain. The spine consists of over 30 bones. The upper and lower limbs, as well as the girdles, make up the three limbs of the skeleton. The girdle facilitates the attachment of the four limbs to the vertebral column.

The skull is made up of several bones which surround the brain thereby giving it protection. The heart and the lungs are enshrouded by the thoracic cavity giving them protection. On the other hand the vertebral column gives the spinal cord structure as well as the protection.

You may wonder how the skeleton moves. The nerves in the muscles give the muscles the signal to move. The muscles contract when the nervous system sends commands to the skeletal muscles. When the muscles contract movement is created at the joints between the bones.

You should also know that the bones are grouped into two categories: the axial skeleton and the appendicular skeleton. Movement is facilitated by the appendicular skeleton while internal organs are protected by the axial skeleton.

The limbs and the girdles makes up the appendicular skeleton while the skull, vertebral column, thoracic cage comprises the axial skeleton.

You should also should know that there are five types of bones which include the long and short bones, sesamoid bones, the flat bones, and the patella bones.

Source: http://www.raechic.com/?p=1203