P4 M1 And D1 Essay examples

2393 Words Mar 4th, 2015 10 Pages
An explanation of the physiology of two named body systems in relation to energy metabolism in the body. (P4)

In this assignment I will be explaining the physiology of two named body systems in relation to energy metabolism in the body, the Respiration system and the Digestive system. I will start off by giving a definition of energy metabolism in the body. Metabolism in the body is a collection of chemical reactions that takes place in the body’s cells. Metabolism converts the nutrients in the food that we eat in to essential energy which is needed to power all that we do, from something as little as thinking to growing physically or carrying out a physical activity. In our body’s, there are a specific protein which controls the
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Food must be broken down all the way to its individual molecules to be useable. This involves a number of steps, and different organs to do different parts of the job. Once food is broken down it provides energy for many essential body functions. It provides the energy for all of our physical activity such as walking, playing sports, working, and talking. It also provides the energy for other, more automatic, activities including breathing and thinking. Food provides the energy for the nerves, muscles, and organs, including the heart, to continue working. It provides the fuel to build and repair body tissues. Food energy is needed to regulate body organs and systems. It is the fuel that provides heat to keep our body temperature at a steady 98.6 degrees. The digestive process begins in the mouth. There, the teeth and the muscles of the mouth begin the digestive process by breaking down the food into smaller bits. Saliva, produced by the salivary glands, begins to digest the food before it is even swallowed. Saliva and the other chemicals produced along the way to speed the digestive process are called digestive enzymes. https://uk.answers.yahoo.com

Cellular Respiration

Energy is obtained from the food we eat. The cells break down the energy stored in the food through a system known as cellular respiration. Cellular respiration means the food is broken down by the cells to produce the energy which is in the form of ATP molecules (Adenosine Tri

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