P4 M1 And D1

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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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Discuss the role of energy in the body (M1)

In our bodies we need energy so that we could do things that are possible such as move our muscles, talk and all the other things that we do. Without energy all humans would be useless not being able to do anything. Energy is needed to extract the oxygen from the areas in our bodies and diffuse it into our bloodstream. Supplying enough energy to support the functions of the body in a daily basis is one of the main reasons for food. This energy comes from the fats, carbohydrates, and proteins in the food you eat. Of the three, fat is the most concentrated source of energy. Energy requirements are normally put in terms of calories. The energy requirement for a person is spilt into two parts: basal metabolic requirements and energy required for activity. Basal metabolic rate (BMR) is the heat taken from the body at rest when temperature is normal. An average person requires 2000-2500 Calories per day while the difference for a large man doing heavy work may require up to 6000 Calories per day. When you choose foods that have more energy, or Calories than you need, the excess energy is stored as fat in the body which will results in putting on some weight. If too little food is eaten to meet energy demands, the body's stored fat serves as an energy source and this will result in weight loss. Your weight stays about the same if the energy from food matches the energy requirements of the body. As warm blooded

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