Every plant or animal is made up of different chemical elements. Each of these elements have specific functions in the body. This means that some chemicals are essential to the body, while other chemicals can cause problems. Some chemicals in the body help to create energy and keep the body healthy. These include oxygen, glucose, and fatty acids.

Other chemicals are needed for specific purposes. For example, sodium, potassium, chloride, and calcium help to regulate blood pressure and the nerves. The digestive system is made up of chemicals called enzymes. These help food to become Chemical suppliers digested. The nervous system consists of chemicals called neurotransmitters. These chemicals transmit messages throughout the body.

The muscles are made of proteins, and carbohydrates make up the bulk of these proteins. The hormones in the body are also chemical. They influence the actions of cells in the body. The skin is mostly made up of lipids, which protect the body against the elements. The organs in the body are made of chemicals called structural materials. These chemicals are important for maintaining the shape of the body. Each chemical plays a very important role in the body.

It is necessary to understand about these chemicals and the processes of metabolism.