پاورپوینت سیستم انرژی (pptx) 38 اسلاید

دسته بندی : پاورپوینت

نوع فایل : PowerPoint (.pptx) ( قابل ویرایش و آماده پرینت )

تعداد اسلاید: 38 اسلاید

قسمتی از متن PowerPoint (.pptx) :

Energy Systems Energy for Exercise The food is broken down into soluble chemicals (e.g. glucose) by digestion in the gut. The soluble chemicals pass through the gut wall into the blood. The blood carries the soluble food chemicals to all of the body’s cells, where they will be used for: Energy Growth Repair Food is the source of energy for the human body and it also provides nutrients for growth and repair. When food is eaten, this is what happens… The muscles of the body use both carbohydrates and fats to produce energy. The following diagram shows how carbohydrates are used. Making Energy Available to the Cells of the Body Carbohydrates in the form of starch gained from foods such as pasta, bread and potatoes are eaten. The starch is digested in the gut and turned into glucose molecules. The glucose enters the small intestine where it passes intothe blood. The glucose is then used in 3 different ways… Here some of the glucose is stored as glycogen and used to maintain blood sugar levels. Glucose is stored here as glycogen and is used when the body is working harder. Glucose diffuses easily into the cells and is used to meet their energy demands. Skeletal Muscle Liver Body Cells The Energy Systems Energy systems Aerobic Anaerobic Oxygen system Phosphate system Lactate system Dr. taghavi 1. Hydrolysis of the unstable phosphate groups of ATP molecule by H2O 3. Energy is released (38 to 42 kJ, or 9 to 10 kcal/mol ATP) a) ATP breakdown (ATP turnover) Initial stores of ATP in the muscles are used up very quickly and ATP must be regenerated 2. ATP is formed by recombination of ADP and Pi 3. Regeneration of ATP requires energy (from breakdown of food molecules) c) ATP resynthesis High Energy Phosphate System ADP + Pi  ATP