ANATOMY

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 negative feedback loops within the organism. In contrast, positive feedback loops push the organism further out of homeostasis, but may be necessary for life to occur. Homeostasis is controlled by the nervous and endocrine systems in mammals.

Detailed explanation-3: -A positive feedback loop results in a change in the body’s status, rather than a return to homeostasis. An excellent example of positive feedback involves the amplification of labor contractions. The contractions begin as the baby moves into position, stretching the cervix beyond its normal position.

Detailed explanation-4: -Negative feedback occurs when a system’s output acts to reduce or dampen the processes that lead to the output of that system, resulting in less output. In general, negative feedback loops allow systems to self-stabilize. Negative feedback is a vital control mechanism for the body’s homeostasis.