BIOLOGY FORM THREE TOPIC 5: REGULATION

Concept of Regulation
The Concept of Regulation
Explain the concept of regulation
Living organisms are subjected to wide variations in temperature, light, acidity, salinity, wind speeds, availability of water minerals and nutrients. These environmental factors create a shifting external setting to which organisms must adjust or die.
The central problem for a living thing is to maintain a steady state internally in the force of an often harsh and fluctuating external environment.
Homeostasis is the maintaining of a constant condition of the internal environment of the body by regulatory process. OR It is the maintenance of constant internal balance despite fluctuation in the external environment.
Regulation is the process of controlling the internal body environment and needs. For the body to function properly things need to be regulated in the body.
Reasons that show importance of regulation
  1. Maintaining favorable condition such as pH and required ionic concentration for the functioning of cells, tissues and organs.
  2. Enabling organisms to get rid of body wastes and useless materials for example excess water and salts
  3. Enabling organisms to get rid of excess materials for example excess water and salts
  4. Ensuring survival of the organisms
Various Types of Regulation
Mention various types of regulation
The following are the types of regulation:
  1. Temperature regulation (thermoregulation)
  2. Blood sugar regulation
  3. Osmoregulation

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