Question

1/30 - homeostasis feedback (dg)
determine whether the following example is positive (+) or negative feedback (-) and name the body system(s) that are involved.
the human body maintains a blood ph within the very narrow range of 7.35 to 7.45. a ph below this range is called acidosis and a ph above this range is alkalosis. either condition can be life - threatening. one can live only a few hours with a blood ph below 7.35 or above 7.45, and a ph below 6.8 or above 9.0 is quickly fatal.
yet the body’s metabolism constantly produces a variety of acidic waste products that challenge its ability to maintain ph in a safe range. individual blood cells, the kidneys, and even your lungs remove wastes to maintain ph at appropriate levels.
which type of feedback does this loop show?
which body systems are involved?

Explanation:

1. This is negative feedback because the body acts to reverse deviations from the normal blood pH range, restoring it to the set point.
2. The respiratory system (lungs) removes carbon dioxide (an acidic waste) and the urinary system (kidneys) excretes other acidic wastes to regulate pH.

Answer:

• Type of feedback loop: Negative feedback (-)
• Involved body systems: Respiratory system, Urinary (renal) system