Which of the following are components of homeostatic mechanism;
Correct answer: B. Receptors, Integrator, Effectors
- A. Receptor, Regulators, Effectors
- B. Receptors, Integrator, Effectors
- C. Sensors, Brain, Effectors
- D. All of the above
Explanation
The correct answer is Receptors, Integrator, Effectors. These are the three core components of a homeostatic mechanism:Receptor: Detects external changes and sends this information to the integrator. For example, temperature sensors in the skin detect changes in body temperature.Integrator: Often the brain, it processes the information from receptors and decides on the necessary response. It determines whether the current state deviates from the set point.Effector: Receives instructions from the integrator and acts to bring the system back to its set point. For instance, sweat glands act to cool the body down.Options containing 'Regulators' or 'Brain' are incorrect as they either use non-specific terms or imply a specific organ not universally applicable to all homeostatic processes.
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About Thermoregulation
Thermoregulation maintains body temperature through negative feedback controlled mainly by the hypothalamus. It covers vasodilation and vasoconstriction, sweating, shivering, changes in metabolic heat production and behavioural responses, while distinguishing heat loss by radiation, conduction, convection and evaporation from temperature regulation itself.
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