Question

A positive feedback loop is one in which the body:

Options:
a. Returns to a set point.
b. Pushes the set point beyond normal levels.
c. Doesn’t respond to changes.
d. None of the above.

Answer 1

A positive feedback loop pushes physiological conditions beyond normal levels in response to a deviation, until a specific endpoint is reached, as is seen in processes like childbirth and blood clotting.

Step-by-step explanation:

A positive feedback loop is a process in which the body's physiological condition is intensified in response to a deviation from the normal range. Contrary to bringing the system back to a set point, as is the case with negative feedback loops, positive feedback mechanisms push the physiological state beyond normal levels to achieve a specific function, and they proceed until a particular endpoint is reached. Positive feedback is essential in certain scenarios, such as during childbirth or in the body's response to blood loss, where a definitive end goal, like the birth of a baby or the clotting of blood, is needed.