The Cardiovascular system - Arteries and Veins

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What are the 3 main functions of the cardiovascular system?
1) Transport of oxygen, carbon dioxide and nutrients 2) Clotting of opened wounds 3)Regulation of body temperature
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What are the main types of blood vessels?
Arteries, Veins, Arterioles, Capillaries and Venules.
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What does the word pulmonary relate to?
The lungs
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What does the word coronary mean?
The arteries which surround and supply the heart muscle
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What are the 2 main coronary arteries?
The right coronary artery and the left coronary artery
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Explain key points about the artery
It is a blood vessel with thick muscular walls and a narrow lumen. Arteries take blood away from the heart, the narrow lumen allows blood to be carried quickly under high pressure. Arteries have no valves as there is a high pressure so no backflow.
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What is the largest artery in the body?
The aorta in the left side of the heart.
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Explain key points about veins in the body
Veins have thin muscular walls with a large lumen, veins always carry blood towards the heart. Blood flowing through veins will always be at a lower pressure compared to the arteries, blood will be moving slower with lower pressure&veins have valves.
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What is the largest vein in the body?
The Vena Cava is the largest vein in the body.
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Explain key points about the capillaries in the body
They are the smallest blood vessel, the walls are made up from one cell thick and they have a very small lumen. Capillaries carry blood at a low pressure and are found around tissues where nutrients and wastes are exchanged in the large surface area.
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Explain key points about arterioles in the body
An arteriole is a small blood vessel that extends and branches out from an artery and leads to capillaries. They have smooth walls and have the most peripheral resistance found within the arteriole walls.
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Explain key points about venules in the body
Venules are a blood vessel which connects to capillaries, as venules are formed at the exit of capillaries which are small blood vessels that carry blood from the capillaries to a vein which the carries the blood back to the heart.
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Describe the coronary circulation
Coronary arteries come directly from the aorta just after he aortic valve, they have many branches forming a web of blood vessels to supply the heart muscle. It supplies oxygenated blood to the heart muscle, cardiac veins drain deoxygenated blood
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Is the left and right coronary artery the same size?
The right coronary artery is smaller than the left as it is only pumping blood to the lungs, and the left side pumps to the whole of the body.
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What happens if there is a blockage in the coronary arteries?
If there is a blockage this will deprive the heart muscle of oxygen causing the heart to die and this can lead to a heart attack.
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Other cards in this set

Card 2

Front

What are the main types of blood vessels?

Back

Arteries, Veins, Arterioles, Capillaries and Venules.

Card 3

Front

What does the word pulmonary relate to?

Back

Preview of the front of card 3

Card 4

Front

What does the word coronary mean?

Back

Preview of the front of card 4

Card 5

Front

What are the 2 main coronary arteries?

Back

Preview of the front of card 5
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