13.6 Blood vessels and their function

Question 1

Four blood vessels?

Answer 1

• Arteries - carry blood AWAY from the heart.
• Arterioles - smaller arteries that connect blood flow from arteries to capillaries.
• Capillaries - tiny vessels that link arterioles to veins.
• Veins - carry blood BACK TO heart.

Question 2

What is the basic structure of arteries, arterioles and veins (from outside inwards)?

Answer 2

• Tough outer layer
• Muscle layer
• Elastic layer
• Thin inner lining (endothelium)
• Lumen

Question 3

QUESTION ABOUT ARTERY STRUCTTURE

Answer 3

.

Question 4

QUESTION ABOUT ARTERIOLE STRUCTURE

Answer 4

n