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Questions and Answers
What are veins?
What are veins?
- These vessels carry blood away from the heart
- These vessels have thicker walls
- These vessels return blood to the heart (correct)
- These vessels are involved in nutrient exchange
What types of vessels are the superior and inferior vena cava classified as?
What types of vessels are the superior and inferior vena cava classified as?
veins
Blood pressure in veins is high.
Blood pressure in veins is high.
False (B)
What type of blood do veins typically transport?
What type of blood do veins typically transport?
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Some larger veins have valves to prevent back flow.
Some larger veins have valves to prevent back flow.
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What is the function of arteries?
What is the function of arteries?
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What is classified as an artery?
What is classified as an artery?
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Arteries have thinner walls compared to veins.
Arteries have thinner walls compared to veins.
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Where does nutrient and gas exchange occur?
Where does nutrient and gas exchange occur?
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What drains the tiny vessels known as capillaries?
What drains the tiny vessels known as capillaries?
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Study Notes
Veins
- Function to return blood to the heart.
- Include major vessels such as the superior and inferior vena cava.
- Characterized by low blood pressure within these vessels.
- Have thinner walls compared to arteries and primarily transport oxygen-poor blood.
- Some larger veins contain valves that prevent backflow of blood.
Arteries
- Responsible for carrying blood away from the heart.
- The aorta is the largest and a key example of an artery.
- Feature thicker walls and a more substantial tunica media, accommodating higher blood pressure.
Capillaries
- Serve as the sites for nutrient and gas exchange between blood and tissues.
- Venules, small veins, drain blood from these tiny capillary networks.
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