Question

Match the words in the left column to the appropriate sentence on the right. Words may be used more than once. Reset Help Negative feedback 1. Used for changes in blood glucose levels Positive feedback 2. Used for changes in blood pressure: 3. Used for blood clotting 4. Used for childbirth:

Answer 1

  1. Used for changes in blood glucose levels: Negative feedback

   Explanation:

Insulin responsible for the decrease in glucose level and it is negative feedback system. Eg: If a person is not eaten anything then the glucose level decrease and this is compensated by converting the glycogen into glucose with the help of pancreas producing hormone called glucagon. This resulting in the increase of blood glucose level.

2. Used for changes in blood pressure: Negative feedback

   Explanation:

It is a negative feedback system with blood sensor known as baroreceptors which helps to detect the blood pressure. Which detects the pressure is too high or to low then it send message in the form of signal to hypothalamus. The hypothalamus send  reply message to the heart, kidneys and  blood vessels.

3. Used for blood clotting: Positive feedback

   Explanation:

When wound present then the body respond to it with a positive feedback system to clot the blood to stop blood loss. Then the platelets in the blood clot release chemicals that attract additional platelets to the clotting site.

    4. Used for childbirth: Positive feedback

Explanation: ​​​​​​

A positive feedback system control  the  stimulus direction and possibly accelerates it. In childbirth hormone oxytocin of  endocrine system which causes or  stimulates the contraction of the uterus.

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