The cardiovascular system is, at times, hard to visualize as far as the directions blood is circulating. This powerpoint is full of animations highlighting the anatomy of the heart and circulatory system, and the physiology of gas exchanges, and of how the blood flows through the system to give students "the big picture". It comes with fill-in-the-blank notes, which can be easily edited.
This powerpoint and notes cover the following topics:
-overview of the Cardiovascular system and major functions
-Anatomy of the heart
-types of blood vessles
-valves of the heart