2C30.35 • Artery, Vein, and Capillary Model

Photo Shows the Apparatus Used at U.T. Austin

Concepts Conveyed:

• Demonstrates the anatomy and physics of veins (blue), arteries (red), and capillaries (purple). Each piece has parts labeled with a number, designated in the key. A copy of the key is included above.
• There is a gradient of flow lines of blood moving at different velocities at different locations within the blood vessels, which is characterized by laminar flow. This is due to wall stress, where the blood flowing closest to the wall has to fight against friction, which decreases the velocity. The flow becomes turbulent in areas where vessels branch off or change in diameter, which requires more energy to move the blood.

Last updated on October 12, 2023