Topic 1- Blood Vessels

Question 1

Pulmonary Circulation:

Answer 1

Involves the circulation from the heart to the lungs and back again.

Question 2

Systemic Circulation

Answer 2

Involves the circulation of blood from the body aside from the lungs because the lungs need to get the blood oxygenated.

Question 3

What are the 3 types of Vessels?

Answer 3

• Artery
• Capillaries
• Vein

Question 4

What do the Arteries do?

Answer 4

• Carry oxygenated blood away from the heart.
• Has thick walls composed of 3 layers because it has to pump blood through the body.
• Branch into arterioles (much thinner then arteries) then to capillaries where gas exchange occurs.
• High pressure

Question 5

Precappilary Sphincters:

Answer 5

Regulate movement of blood from arterioles to the cappilaries.

Question 6

Capillaries:

Answer 6

• Carries waste-filled blood and flows back to the heart in small venules which then form into veins.
• Single cell layer thick
• Site of fluid and gas exchange between blood and tissue cells.
• Damaged easily
  and leads to Bruising.

Question 7

Veins and Venules:

Answer 7

The Capillary merges and becomes a venule and then a large vessel. Veins merge and transport blood to the heart to get oxygenated.
- One way valves help move blood back to the heart and prevents back flow.

Question 8

Varicose Vein:

Answer 8

Valves that are tangled up and show up on the surface of the skin due to weekend valves.

Question 9

Vasoconstriction:

Answer 9

• Narrowing of blood cells.
• Less blood to tissues
• Blood to major muscles and core.

Question 10

Vasodilation:

Answer 10

• Widening of blood cells.
• More blood to tissues
  Releases heat and causes blushing.

Question 11

Aneurysm:

Answer 11

• A bulge in a weakened wall of a blood vessel. Can cause stroke because of the pressure on the brain.

Question 12

Atherosclerosis:

Answer 12

• Fatty deposits on the walls of the arteries when excess lipids gather up.
• Cuts blood flow
• Heart attacks occur because of the amount of blood and oxygen being received causing chest pain.

Question 13

What kind of blood do arteries carry?

Answer 13

• Oxygenated blood, but the pulmonary artery carries deoxygenated blood to the lungs.

Question 14

What kind of blood do veins carry?

Answer 14

• Deoxygenated blood, but the pulmonary vein carries oxygenated blood into the heart.