Question

Examples of positive and negative feedback mechanisms involving endocrine hormones?

Answer 1

Answer:

positive feedback - enhances the effect by its own influence. for example - oxytocin produced during childbirth stimulates contraction. the contractions in turn stimulate pituitary to produce more oxytocin, thus bringing about more contractions.

negative feedback - counteraction of an effect by its own influence. for example insulin lowers blood glucose when levels are high ; glucagon raises blood glucose when levels are low

Answer 2

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. The release of oxytocin result in stronger or augmented contractions during labor.