Stages of Labor (Dilation, Expulsion, Placental)

@Anatomage is the maker of the Anatomage Table - the most advanced real human-based medical education system, featuring a diverse collection of digitized real human cadavers. To learn more, go to https://anatomage.com/siebertscience ----- 👶🏻 My COMPLETE GUIDE TO THE REPRODUCTIVE SYSTEM: https://store.siebertscience.com/prod... 📗 FREE A&P SURVIVAL GUIDE: https://siebertscience.kit.com/anatom... 🫀 A&P STUDY CARDS: https://store.siebertscience.com/prod... 👩🏻‍⚕️ Learn faster and score higher with THE MEMORY LAB: https://memorylab.siebertscience.com ----- 🩻 PATREON: Support the channel and get access to blank and labeled diagrams for all of my anatomy & physiology videos! -   / siebertscience   ----- In this video, I explain the three stages of labor and birth: dilation, expulsion, & placental. I talk about the changes that lead up to true labor, how the cervix effaces and dilates, the positive feedback loop that stimulates contractions with oxytocin, types of fetal positioning, and cardinal movements during expulsion. 0:00 Introduction 0:43 Pregnancy Anatomy 3:05 Pregnant vs. Non-Pregnant Anatomy 3:27 Three Stages of Birth 6:01 Onset of True Labor 7:29 Contractions 8:45 Oxytocin Feedback Loop 10:26 Cervical Changes 13:18 Fetal Orientation 14:50 Pelvic Anatomy 16:45 Fetal Movements During Birth 20:22 Placental Stage & Post-Partum