PATHOLOGY

Detailed explanation-1: -Homeostasis is carried out by our nervous system and chemical responses: Cells called receptors detect stimuli (changes in the environment). Coordination centres (such as the brain, the spinal cord and the pancreas) receive and process information from receptors.

Detailed explanation-2: -Organisms respond to external stimuli to maintain homeostasis. Every organism has its own range of tolerance. When an environmental condition (such as temperature) goes above or below an organism’s optimal range, the organism experiences stress and responds to the stimulus.