Powerpoint:

Cardiovascular System Day 5.ppt

Vocabulary:

Practice Questions:

What is the name of the largest blood vessel? Is it an artery, vein or capillary? Aorta, artery
What are three differences between arteries and veins? Arteries carry blood away from the heart, veins towards. Pressure is high in arteries (due to heart), low in veins. Arteries generally carry oxygenated blood, veins deoxygenated (with the exception of the pulmonary circuit). Veins have valves to prevent backflow, arteries do not. Veins are wider on average. Arteries have more smooth muscle.
Approximately how thick are the walls of the capillaries? About one cell thick