ARTERIES

WHAT IS AN ARTERY

• Each artery carries blood away from your
• heart to another body part. They are veins on your heart.
• A strong heart and healthy lungs are not helpful if your arteries
• are not clear. An extreme case of atherosclerosis can completely
• block the blood flow in your arteries.

ITS FUNCTIONS

• Regular physical activity benefits your
• cardiovascular fitness. Arteries supply the
• heart with blood and oxygen. Any people
• who exercise regularly can develop extra coronary arteries.

ASTRONAUT

• An astronaut Ed White died in a fire,
• in 1967. While training for a mission,
• an autopsy was performed. The doctors said
• that one of the major arteries was completely blocked
• due to atherosclerosis.

WHAT THEY LOOK LIKE

• Arteries are tough on the outside but
• smooth on the inside. There are actually
• 3 layers on your arteries, an outer layer of
• tissue, a muscular middle, and a inner layer
• of epithelial cells.