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Ratings & reviews

4.08/20/2025

A true inspiration to all who learn.

4.05/21/2025

A master at fostering understanding.

5.03/31/2025

Inspires curiosity and a love for knowledge.

4.02/27/2025

Makes even hard topics easy to grasp.

5.02/4/2025

Great Professor!

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About Helen

Associate Professor Helen Ritchie is a Senior Lecturer in the School of Medical Sciences, Faculty of Medicine and Health at the University of Sydney, where she holds the position of Associate Professor within the Education Innovation Research Theme. She earned her PhD and has built a distinguished career focused on developmental toxicology and anatomy education. Ritchie's research investigates the mechanisms underlying drug-induced teratogenicity, emphasizing effects on embryonic heart rate, cardiotoxicity, fetal hypoxia, and ion channel blockade in rat embryo models. Her studies examine prenatal exposures to various agents, including anticonvulsants such as phenytoin, anti-emetics, anti-infectives, cocaine, herbicides like Tordon 75D, and herbal substances including yarrow, valerian, hawthorn, and feverfew. She also explores gene-environment interactions contributing to congenital heart disease, particularly involving the Notch pathway.