Merit for Anatomy and Physiology Assignment (Unit 5)

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Merit for anatomy and physiology assignment (unit 5) All the cells in our body need energy to carry out the necessary chemical reactions so that they can complete their specific functions, these functions include: respiration, motion, cognitive processes and growth. The energy could be there to assist with the formation of certain compounds or to produce a chemical rise across a membrane with which reactions may be triggered or reproduced. There are plenty many functions in the body which require energy, these can be put under the term of metabolism, which are essential for life. The body digests complex molecules such as proteins, lipids and carbohydrates into glucose, amino acids and monoglycerides. These can then be transported in the appropriate form to the cells in the body through the circulatory system. For growth and repair of our cells and tissues energy is required, this is due to the biochemical reactions which build large molecules from simpler ones to occur. This energy is then needed in order to build proteins from amino acids, these are formed through the process of Active transport of substances in or out of our cells happens through this energy made, an example of this would be the transport of amino acids from the small intestine into the blood stream. Active transport often takes place against a diffusion gradient which then allows the body to control its internal environment more efficiently. When we move our body uses energy, this occurs on several levels: • inside our cells – chromosome • whole cells – sperm swimming • tissues – muscles contracting • whole organs – heart beating • part or whole organisms – walking Since the blood found in the human body is warm energy is used in order to maintain the temperature, we use 70% of this energy from respiration to do so and this makes sure the temperature stays at 37
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