Female Reproductive Cycle | Menstrual Cycle https://stream.echo6.co/videos/watch/a31ec12e-32ab-4367-b113-02d38f0cb594 Official Ninja Nerd Website: https://ninjanerd.org Ninja Nerds! In this reproductive physiology lecture, Professor Zach Murphy discusses the Menstrual Cycle, highlighting the hormonal regulation, endometrial changes, and clinical relevance of the menstrual phase of the female reproductive cycle. We begin by reviewing the decline in progesterone and estrogen at the end of the luteal phase—triggered by the degeneration of the corpus luteum—which leads to vasoconstriction of spiral arteries, ischemia, and eventual shedding of the functional layer of the endometrium. The lecture explains how this cyclical endometrial breakdown results in menstrual bleeding, typically marking day 1 of the menstrual cycle. We also discuss the hormonal reset that follows menstruation, with FSH levels rising to begin the next cycle of follicular recruitment. By covering the molecular and structural aspects of endometrial sloughing, this lecture ties in both physiology and pathology, offering insight into normal vs. abnormal uterine bleeding, amenorrhea, and the use of hormonal therapies to regulate cycles. Enjoy the lecture and support us below! 🌐 Official Links Website: https://www.ninjanerd.org Podcast: https://podcast.ninjanerd.org Store: https://merch.ninjanerd.org 📱 Social Media https://www.tiktok.com/@ninjanerdlectures https://www.instagram.com/ninjanerdlectures https://www.facebook.com/ninjanerdlectures https://x.com/ninjanerdsci/ https://www.linkedin.com/company/ninja-nerd/ 💬 Join Our Community Discord: https://discord.gg/3srTG4dngW #ninjanerd #MenstrualCycle #FemaleReproductiveCycle Mon, 13 Apr 2026 22:52:57 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co Female Reproductive Cycle | Menstrual Cycle https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/a31ec12e-32ab-4367-b113-02d38f0cb594 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.