What is the menstrual cycle? The menstrual cycle refers to the regular changes in the activity of the ovaries and the endometrium that make reproduction possible.
Find our complete video library only on Osmosis Prime:
Hundreds of thousands of current & future clinicians learn by Osmosis. We have unparalleled tools and materials to prepare you to succeed in school, on board exams, and as a future clinician. Sign up for a free trial at
Subscribe to our Youtube channel at
Get early access to our upcoming video releases, practice questions, giveaways, and more when you follow us on social media:
Our Vision: Everyone who cares for someone will learn by Osmosis.
Our Mission: To empower the world’s clinicians and caregivers with the best learning experience possible. Learn more here:
Medical disclaimer: Knowledge Diffusion Inc (DBA Osmosis) does not provide medical advice. Osmosis and the content available on Osmosis’s properties (Osmosis.org, YouTube, and other channels) do not provide a diagnosis or other recommendation for treatment and are not a substitute for the professional judgment of a healthcare professional in diagnosis and treatment of any person or animal. The determination of the need for medical services and the types of healthcare to be provided to a patient are decisions that should be made only by a physician or other licensed health care provider. Always seek the advice of a physician or other qualified healthcare provider with any questions you have regarding a medical condition.