PATHOLOGY

PATHOLOGY MCQ

ENDOCRINE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Birth contractions, increasing milk supply, and clotting of a cut are examples of
A
negative feedback
B
mechanical digestion
C
positive feedback
D
excretion
Explanation: 

Detailed explanation-1: -The release of oxytocin from the posterior pituitary gland during labor is an example of positive feedback mechanism. Oxytocin stimulates the muscle contractions that push the baby through the birth canal.

Detailed explanation-2: -In a positive feedback loop, feedback serves to intensify a response until an endpoint is reached. Examples of processes controlled by positive feedback in the human body include blood clotting and childbirth.

Detailed explanation-3: -One example, however, is lactation. The suckling action of an infant produces prolactin, which leads to milk production; more suckling leads to more prolactin, which in turn leads to more lactation. This is a positive feedback system as the product (milk) produces more suckling and more hormone.

Detailed explanation-4: -Positive feedback you can give: “I’m really happy with your determination to finish this project. I know it wasn’t easy, but I knew you could do it. Your helpful attitude makes it clear that you can continue to take on new challenges and grow with the company.

There is 1 question to complete.