MICROANATOMY

ENDOCRINE ORGANS AND RESPIRATORY SYSTEM

ENDOCRINE ORGANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is an example of a positive feedback loop?
A
regulation of body temperature at 37 degrees Celsius
B
regulation of blood sugar levels
C
contractions during childbirth
D
regulation of water levels in humans
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: -Explanation: Contraction of the uterus during childbirth causes the release of oxytocin, which stimulates stronger contractions of the uterus, causing more oxytocin release. This perpetual cycle results in a positive feedback response.

Detailed explanation-3: -Normal childbirth is driven by a positive feedback loop. A positive feedback loop results in a change in the body’s status, rather than a return to homeostasis.

Detailed explanation-4: -Thus, the correct answer is ‘Seasonal growth.

Detailed explanation-5: -Another example of positive feedback is uterine contractions during childbirth. The hormone oxytocin, made by the endocrine system, stimulates the contraction of the uterus. This produces pain sensed by the nervous system.

There is 1 question to complete.