![]() When cell production and destruction, recovery from disease, growth and development are added to these events, the body’s activities will become more complicated and the amount of energy spent will increase accordingly. As a matter of fact, this systematic work also creates an extra load and energy need. Separate energy is required for each of these activities.įrom this point of view, more than one work is carried out collectively and systematically to perform a simple and basic mission. The brain coordinates all these activities. Waste must also be removed from the body. The supplied oxygen and glucose must be delivered to the cells the heart works non-stop for this.Īfter the cells use oxygen and glucose, waste is produced. Glucose needs to be taken with food, digested and absorbed. ![]() Oxygen and glucose are required to provide this energy.īreathing takes place for oxygen supply the lungs take in oxygen from the breath and give it to the blood. Therefore, the body expends energy to maintain its physical structure, even if there is no anabolic or catabolic event and no activity is performed. Thus the integrity of the cell is preserved. As a simple physics rule, while the osmotic pressure acts in the direction of the passage of substances from the cell with high density to the less dense blood, the cell prevents this transition by expending energy. Even when no physical or mental activity is performed, the body must spend a certain amount of energy.įrom the point of view of vital activities, even maintaining the integrity of cells is a task in itself and the body has to expend energy to achieve this.Īs a matter of fact, the inside of the cell is denser than the blood. The body expends energy on all the activities it performs. ![]() Energy metabolism should be considered in two aspects the energy spent and the energy produced in the body. ![]()
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