Which of the following describes a negative feedback loop?
Answer
A
When the heart rate is too high, the body sends hormones that continually increase the heart rate higher.
B
When a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones.
C
When blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows.
D
When a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.