The Circulatory System

1. Blood Flow through Blood Vessels

2. Blood Vessel Structure and Function

2.1. Arteries - carry blood away from the heart

2.1.1. Arterioles - smaller than arteries

2.1.1.1. capillaries

2.2. venous return

2.3. Arteries flow away from heart and Veins return blood to heart.

3. thought bubble

4. Heart