Core Pre-Health Science Explainers

Welcome to Human Science Explainers, a free educational resource for college students preparing for nursing, medicine, radiology, dental hygiene, dentistry, EMS, physical therapy, chiropractic, and other healthcare careers.

I’m Corey Sullivan, an Associate Professor of Human Science with more than 20 years of community college teaching experience. I create clear, scientifically accurate explanations that help students understand challenging concepts and connect foundational science with healthcare applications.

Videos are organized into carefully sequenced playlists, making it easy to study a specific topic, continue to the next lesson, or work through a complete course.

Topics include:

• Human Anatomy and Physiology
• Human Nutrition
• Microbiology
• Pathophysiology 

Whether you are reviewing for an exam, working through a difficult concept, or completing an entire course, begin with the playlist that matches your subject and follow the videos in their recommended order.