1.Basics of biology


Homeostasis is the tendency of an organism to maintain optimal internal conditions. It entails a system of feedback controls so as to stabilize and keep up with the normal homeostatic range despite the changing external conditions. For instance, it employs homeostatic mechanisms to regulate temperature, pH, and blood pressure.

The homeostatic system is comprised of three main components: a receptor, a control center, and an effector. The receptor of the homeostatic system includes the various sensory receptors that can detect external and internal changes. The information is sent to the control center to process it and to produce a signal to incite an appropriate response from the effector. The concept of homeostasis is credited to Claude Bernard in 1865.

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