How to translate text using browser tools
1 January 2014 Using a Cyclical Diagram to Visualize the Events of the Ovulatory Menstrual Cycle
Ivan Shun Ho, Navneet K. Parmar
Author Affiliations +

Over the past 10 years, college textbooks in human anatomy and physiology have typically presented the events of the ovulatory menstrual cycle in a linear format, with time in days shown on the x-axis, and hormone levels, follicular development, and uterine lining on the y-axis. In addition, the various events are often shown over a 28-day cycle, when they can take place over 21–35 days and may not be regular at all. Here, we propose a circular diagram that is independent of a set cycle time and readily shows the cyclic nature of the events. This diagram can be presented sequentially in organized layers, and additional complexity can be added. In addition, we present questions here that can promote self-learning before and critical thinking after the discussion of the cycle to enhance understanding of the physiological events.

©2014 by National Association of Biology Teachers. All rights reserved. Request permission to photocopy or reproduce article content at the University of California Press's Rights and Permissions Web site at
Ivan Shun Ho and Navneet K. Parmar "Using a Cyclical Diagram to Visualize the Events of the Ovulatory Menstrual Cycle," The American Biology Teacher 76(1), 12-16, (1 January 2014).
Published: 1 January 2014

This article is only available to subscribers.
It is not available for individual sale.

holistic diagram
menstrual cycle
Get copyright permission
Back to Top