7 Questions
What is the unique role of capillaries in the circulatory system?
Collecting carbon dioxide and wastes from cells
Which blood vessel carries pure or oxygenated blood away from the heart?
Arteries
What is the function of valves present inside veins?
Making blood flow only towards the heart
Which blood vessel has a wide lumen and collects carbon dioxide and wastes from cells?
Veins
What is the main difference between arteries and veins regarding the direction of blood flow?
Arteries carry blood away from the heart, while veins carry blood towards the heart
Why does blood flow with jerks in arteries?
Resulting from the great force by the pumping action of the heart
What is the role of arterioles in the circulatory system?
Dividing into fine capillaries within body organs
Study Notes
Capillaries and Blood Vessels
- Capillaries play a unique role in the circulatory system by allowing for the exchange of oxygen and nutrients with cells and removing waste products.
- The pulmonary artery carries oxygenated blood away from the heart to the lungs.
- Valves present inside veins prevent backflow of blood and ensure that it keeps moving towards the heart.
Blood Vessel Characteristics
- Veins have a wide lumen and collect carbon dioxide and waste products from cells.
- The main difference between arteries and veins is the direction of blood flow: arteries carry blood away from the heart, while veins carry blood towards the heart.
Blood Flow and Arterioles
- Blood flow with jerks in arteries is due to the pumping action of the heart.
- Arterioles play a crucial role in the circulatory system by regulating blood pressure through vasoconstriction and vasodilation.
Test your knowledge about blood vessels and arteries, the types of blood vessels in the human body, their functions, and characteristics. Learn about how arteries carry oxygenated blood away from the heart to other parts of the body through their thick and muscular walls.
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