Question

respiratory journey
drag the appropriate labels to where they should go.
artery vein capillary
types of blood vessels
blood vessel type structural characteristics
microscopic, with a very thin layer of
epithelial cells (thin - walled).
thick - walled and muscular to withstand
pressure.
has valves to prevent backflow. blood
is at low pressure.
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Explanation:

• Capillaries are microscopic with thin - walled epithelial cells for gas and nutrient exchange.
• Arteries are thick - walled and muscular to handle high blood pressure from the heart.
• Veins have valves to prevent backflow as blood is at low pressure when returning to the heart.

Answer:

1. Capillary
2. Artery
3. Vein