1 / 6

Oxytocin Hormone: Function and Control Mechanisms

Learn about oxytocin's role in labor, milk ejection, and ejaculation. Understand how oxytocin release is controlled and influenced by various stimuli and hormonal factors.

jamessjames
Download Presentation

Oxytocin Hormone: Function and Control Mechanisms

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. بســم الله الرحـمن الرحـيم

  2. The posterior pituitary hormone –Oxytocin: Produced mainly in the paraventricular nucleus of the hypothalamus.

  3. Action of oxytocin Contraction of smooth muscles of the uterus enhance labor. Contraction of mammary gland myoepithelial cells of the alveoli & the ducts  Ejection of milk 3. In men  ejaculation (contraction of vas deferens propelling sperms towards urethra) Remember: Oxytocin is concerned with releasing or ejection of milk, while prolactin is concerned with synthesis & production of milk.

  4. Milk let down or Milk ejection SUCKLING-----Signals transmitted through sensory nerves to paraventricularand supraoptic nucleus-----------Release of oxytocin----------oxytocin carried by blood to breasts--------------Contraction of myoepithelial cells (smooth muscle like cells)------Flow of milk

  5. Control of oxytocin release 1. Stimulation of nipple(suckling reflex)  oxytocin. 2. Visual or auditory stimuli from the baby   oxytocin secretion. 3. Distension of uterus & stretching of cervix during delivery   oxytocin release. 4. During coitus  oxytocin secretion. 5. Psychological & emotional factors, e.g. Fear, anxiety & pain   oxytocin. 6. Alcohol   oxytocin secretion. Hormones: a. progesterone   uterine sensitivity to oxytocin. b. estrogen   uterine sensitivity to oxytocin.

  6. THANKYOU

More Related