1 / 22

Birth

Birth Towards the end of pregnancy progesterone receptors are blocked so progesterone is no longer effective As a result, the pituitary gland will produce the hormone oxytocin Stretching of the lower uterus walls by the fetus will add to the stimulus for the pituitary to secrete oxytocin

cmarshall
Download Presentation

Birth

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Birth • Towards the end of pregnancy progesterone receptors are blocked so progesterone is no longer effective • As a result, the pituitary gland will produce the hormone oxytocin • Stretching of the lower uterus walls by the fetus will add to the stimulus for the pituitary to secrete oxytocin • Oxytocin causes the smooth muscles in the uterine wall to contract (Labor) • The fact that oxytocin causes the uterine walls to be stretched which in turns stimulates the production of even more oxytocin is an example of positive feedback

More Related