Anatomy And Physiology
Breven Sellers
11/3/2014
Arteries
• Arteries are thick walled, yet they are elastic enough to stand pressure from the heart pumping at a fast rate. The arteries job is to transport blood away from the heart, usually only transporting highly oxygenated blood, having just left the lungs and on its way to the body's tissues
Arterioles
• There are smaller branches of the arteries called arterioles, they connect to the capillaries.
• Arterioles are the main regulators of blood flow and pressure • There used basically as small little bridge, to transport the blood to the capillaries.
Capillaries
• The connectors between the veins and arteries. Very tiny and thin walled like arterioles, (their actually buddies) their function is to supply body tissue with the components of blood and to get rid of waste from surrounding cells. They have a specific job, unlike most blood vessels, which primary job is to transport blood from one station to another continuously.
Venules
• Venules are minute veins- Meaning real quick.
There main job is to drain the capillaries into veins, returning the blood to the heart. Many
Venules unite into one big vein.
Veins
• Veins walls consist of 3 different layers, that are thinner and less stretchy as the layers of arteries. Veins have valves also that aid in returning the blood to the heart, without backtracking or having the blood flow in reverse. Veins only transport oxygenated blood. Main Blood Vessels
• The Aorta is the largest principal artery in the body. It leads to all organs in the body.
Supplying vital oxygen and nutrients.
• Coronary artery is branch of the aorta
vessel, it supplies the heart with oxygen and nutrients. • Pulmonary artery branches into where the blood is oxygenated.
Continuous main blood vessels
• Superior vena cava returns deoxygenated blood from the head, arm, thorax to the right atrium.
• Inferior vena cava returns deoxygenated blood from the abs and the legs