The Human Skeletal System

The skeletal system is the framework of bones in our body that gives shape, support, and protection to our organs. It is made up of bones and cartilage. Bones are hard and not flexible. Calcium gives strength to the bones. They are made up of two parts:

• Biotic part: bone cells (living part)
• Abiotic part: calcium carbonate, calcium phosphate, minerals, and salts (non-living part).

The system that gives a definite shape to the body, provides support and protects the delicate organs inside the body is the skeletal system.

1. Axial Skeleton: The axial skeleton is made up of bones along the centre of the body. It includes the skull, spine (backbone), and rib cage. These bones protect important organs like the brain, heart, and lungs.

2. Appendicular Skeleton: The appendicular skeleton includes the bones of the arms and legs. These bones help in movement and are attached to the central skeleton. The bones in taller people are longer, so they are taller.

As our body grows, the size and length of our bones increase. Such changes in size and length can be seen in children according to age. However, the body continues to grow only up to a certain limit. The bones of taller people are longer.

Parts of the Human Skeletal System