THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -Homeostasis is generally maintained by a negative feedback loop that includes a stimulus, sensor, control centre, and effector . Negative feedback serves to reduce an excessive response and to keep a variable within the normal range. Negative feedback loops control body temperature and the blood glucose level.

Detailed explanation-2: -Homeostasis is maintained by a series of control mechanisms functioning at the organ, tissue or cellular level. These control mechanisms include substrate supply, activation or inhibition of individual enzymes and receptors, synthesis and degradation of enzymes, and compartmentalization.

Detailed explanation-3: -Answer and Explanation: No, positive feedback mechanisms are not used to maintain homeostasis because it amplifies a condition in which it only helps take the process further if it is not present in sufficient amount in the organism.

Detailed explanation-4: -Most control systems maintain homeostasis by a process called negative feedback. Negative feedback prevents a physiological variable or a body function from going beyond the normal range. It does this by reversing a physiological variable change (stimulus) once the normal range is exceeded.