Our skeletal system has 206 bones with five different functions. The bones act as a support structure, giving shape to our body. They protect important internal organs. Bones store minerals so that we can use them later. Blood cells are also stored in bones. Muscles and bones work together to help us move around.

The Skeletal System

The skeletal system consists of the axial and appendicular skeleton. The axial system includes the skull, spinal column, and ribs. The ribs are located in the chest area. The appendicular skeletal system consists of the arms, hands, feet, and legs.

Each leg has three bones. The upper leg bone is called the femur, while the lower leg contains the tibia and fibula. The knee is called the patella.

Each arm also has three bones. The upper arm bone is the humerus. The forearm has the radius and ulna.

Exercise can make bones stronger. This increases the likelihood that they will be able to take an impact without being damages. Exercise can also increase bone mass. Along with exercise, consuming calcium and taking in vitamin D keeps bones from becoming brittle.

The Effect of Exercise on Bones

The Muscular System

The muscular system has three main functions. It is used for body movement, helping with form and posture, and maintaining temperature with body heat.