In this animated and interactive object, learners examine how blood flows through the heart and lungs. A brief quiz completes the activity.
Test your knowledge of Respiration Trivia!
By Bruce Rasmussen
Learners examine the anatomical parts of the lungs.
In this animated and interactive object, learners identify the parts of the cardiovascular system and examine blood flow.
You'll learn about respiration and blood flow. Can you answer these questions?
By Diane Peterson