National Cancer Institute at the National Institutes of Health
Seer Training Modules: Introduction to the Cardiovascular System
Self-guided learning activity where students learn about the structure and function of the human cardiovascular system. There is a short quiz at the end of the lesson to check for understanding.
OpenStax
Open Stax: Anatomy & Physiology: Structure and Function of Blood Vessels
Learn the structure and function of the blood vessels of the human cardiovascular system.
Merck Sharp & Dohme Corp.
Merck Manual: Biology of the Heart
The Merck Manual describes the human heart and shows how the heart pumps blood. Includes interactive 3D models.