The Skeletal System

The skeletal system is the framework of bones and connective tissues that provides support and shape to the body. It serves a variety of functions, including protecting internal organs, facilitating movement, and storing minerals such as calcium and phosphorus. The human skeleton is made up of 206 bones, which are connected to each other by ligaments and joints. These bones are divided into two main categories: the axial skeleton, which includes the skull, spine, and rib cage, and the appendicular skeleton, which includes the arms, legs, and pelvic girdle.

Bones are living tissues that are constantly being broken down and rebuilt in a process called remodeling. This allows bones to adapt to changes in stress and load, such as during growth or in response to exercise. In addition to bones, the skeletal system includes other connective tissues such as cartilage, tendons, and ligaments. Cartilage is a flexible tissue that cushions the joints and helps to absorb shock. Tendons are tough cords that connect muscles to bones, while ligaments are fibrous bands that connect bones to each other. The skeletal system also plays a role in producing blood cells, as the bone marrow located within certain bones produces red and white blood cells and platelets.