body systems

The first 200 words of this essay...

Unit 10:- Human Physiology for Health and Social Care

P3+p4

For the human to survive and function properly, we need energy to let the cells repair themselves. To get this energy, we need to consume three main substances;

* Carbohydrates (one of the three main classes of food and a source of energy. Carbohydrates are the sugars and starches found in breads, cereals, fruits, and vegetables, which, during digestion, are changed into a simple sugar called glucose. Glucose is stored in the liver until cells need it for energy.)

* Protein (A naturally occurring combination of amino acids. Protein is one of the essential components of all living things and the diet of animal organisms.) and,

* Lipids (Another term for fats that can be broken down into fatty acids.)

It is important to eat a healthy amount of the substances found above because food provides energy that the cells need to develop, change, and multiply. It also provides them with energy so they can repair themselves. Consecutively the carbohydrates, protein and lipids need to be digested and broken down so that the body can acquire the energy from them. Digestion occurs both