Answer :

The statement: Positive feedback mechanisms tend to enhance the original stimulus so that the response is accelerated, is true.

Positive feedback mechanism occurs for the maintenance of homeostasis. The positive feedback functions to amplify of increase the output of a reaction. For the maintenance of homeostasis, the positive feedback directs the body towards equilibrium.

Stimulus is any signal that stimulates the body to react or simply produce an action. For example, when the body suddenly touches any hot object, the touch acts as a stimulus, for which the action produced is to remove the hand instantly. The nerve cells acts in this process of carrying the signals inside the body.

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