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Anatomy and Physiology (M1 and D1) Essay

How Energy is used in the Body (M1)

We get chemical energy from food we eat and oxygen that we breathe –we need this to get energy into a usable form to be used by the cells Glucose + Oxygen —————-> Carbon Dioxide + Water

(C6H12O6) (O2) Metabolism (CO2) (H2O) (1C6H12O6) (6O2) In Cells (6CO2) (6H20)

Metabolism is the process of getting chemical energy from larger molecules in food and breaking them down into smaller molecules by the use of enzymes (which are biological catalysts that are used to speed up a chemical reactions), the circulatory system then transports the nutrients to the cells. They’re two types of metabolism which are Catabolism (Aerobic Metabolism) and Anabolism (Anaerobic Metabolism). Catabolism (Aerobic Metabolism) occurs when there is plentiful supply of glucose and oxygen for the cells to use for cellular respiration (Aerobic Respiration happens eventually with the mitochondria in the cells producing A.T.P-Adenosine Triphosphate). Anabolism (Anaerobic Metabolism) will occurs after vigorous exercise when demand for glucose and oxygen cannot be met by the body, cells then breakdown proteins to produce energy. This occurs after the body has used up stored glucose called glycogen from the liver. The bi product of this reaction creates lactic acid this builds up in muscles and so forth gives you cramp

How the Respiratory and Circulatory System Work Together to Control Metabolism (D1)

The heart in the circulatory system pumps blood into the lungs where the blood is oxygenated. The blood is then returned to the heart and the newly oxygenated blood is circulated to the rest of the body. The respiratory system performs a process known as gas exchange that releases carbon dioxide from the body and brings in oxygen. This occurs in the respiratory and the circulatory system then transports the oxygen to tissues that used internal respiration to burn fuel in the form of ATP (adenosine triphosphate) for energy, thus creating more carbon dioxide. The circulatory bring the oxygen the lungs take in around the body and bring the carbon dioxide back for the lungs to expel. The lungs bring oxygen into the blood which feeds the heart and the rest of the body.

Homeostasis which is the maintenance of internal body condition. The circulatory system maintains homeostasis by transporting nutrients to every cell of the body, carrying away waste products and the pH of blood (blood pH should be 7.2 [Slightly Alkaline] to much CO2 blood becomes 6.8 [Slightly Acidic]). The respiratory system maintains homeostasis as it is responsible for bringing in oxygen ( which is then incorporated into the circulatory system and brought to cells in need) and bringing out carbon dioxide (cell waste) (which is brought from the circulatory system to the respiratory system to leave the body)


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