Homeostasis and its process

Homeostasis may be defined as the maintenance of the internal conditions of body at equilibrium, despite changes in the external environment.


For example, the core temperature o human body remains at about 37*C despite fluctuations in the surrounding air temperature. Similarly, the blood glucose level remains about 1g per litre despite eating a meal rich in carbohydrates. Body cells need the internal environment in which conditions do not change much. Stable internal conditions are important for the efficient functioning of enzymes.

Process of Homeostasis

The following are some process of Homeostasis are that:

  1. Osmoregulation
  2. Thermoregulation
  3. Excretion

1. Osmoregulation:

Osmoregulation is the maintenance of the amounts of water and salts in body fluids (i.e. blood and tissue fluid). We known that the relative amounts of water and salts in body fluids and inside cells control the processes of diffusion and osmosis, which are essential for the functioning of cells. (Recall “the concept of tonicity” from Grade IX Biology).

2. Thermoregulation:

Thermoregulation is the maintenance of internal body temperature is called Thermoregulation. The enzymes of body work best at particular temperatures (optimum temperature). Any change in body temperature may affect the functioning of enzymes.

3. Excretion:

Excretion is also a process of homeostasis. In this process, the metabolic wastes are eliminated from body to maintain the internal conditions at equilibrium.

Metabolic Waste means any material that is produced during body metabolism and that may harm the body.


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