UNIT 9: transport IN ANIMALS
Look back at
If you only remember one thing:
arteries take blood away from the heart at high pressure and veins bring it to the heart.
This is the ninth of the 21 Biology units:
UNIT 9 LESSON 1: THE HEART AND CIRCULATION
This lesson has 2 parts: An online simulation and a short video. YOU HAVE TO DO BOTH.
PART 1: HEART STRUCTURE
Here is a diagram you can use: