Question

The arteries divide into smaller vessels. On reaching the tissues, they divide further into extremely thin tubes called _____.
1. venules 
2. arterioles 
3. capillaries 
4. veins

Answer 1

Correct Answer - Option 3 : capillaries 

The correct answer is capillaries.

• The arteries divide into smaller vessels.
• On reaching the tissues, they divide further into extremely thin tubes called capillaries.
• The capillaries join up to form veins that empty into the heart.

• Veins are the vessels that carry carbon dioxide-rich blood from all parts of the body back to the heart.
• The veins have thin walls.
• There are valves present in veins that allow blood to flow only towards the heart.