Question

Which of following describes a negative feedback loop?

a) when the heart rate is too high, the body sends hormones that continually increase the heart rate higher.
b) When a pregnant women is in labor, the body sends hormones that increase the intensity of contractions, which then increase the secrection of the same hormones.
c) when the blood sugar is to low, the body sends hormones the raise blood sugar until it reaches a typical level and hormones secrection slows.
d) when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Answer 1

c) when the blood sugar is to low, the body sends hormones the raise blood sugar until it reaches a typical level and hormones secretion slows.

Step-by-step explanation:

• The function of a negative feedback loop is to reduce the output of a system. In the endocrine system, negative feedback stops or decreases the production of a hormone that is no longer needed.
• This is the case with the hormones that regulates the level of glucose in the body. When the blood sugar level is low, the pancreas is triggered to secrete the hormone glucagon which helps raise the level of blood sugar, until a certain level and the secretion of the hormone slows.