Question

_________ have thin

walls and _________ have thick walls. Blood flows at high pressure in __________ . valves are present in _______ which allow blood to flow only towards the heart. ___________
divide into small vessels. These vessels further divide into extremely thin tubes called
capillaries. The capillaries join up to form ______________.
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Answer 1

ventricles have thin walls and arteries have thick walls. Blood flows at high pressure in arteries. valves are present in veins which allow blood to flow only towards the heart. Detailed Solution divide into small vessels.

The capillaries join up to form veins and carry .

Answer 2

VEINS have thing walls and ARTERIES have thick walls. Blood flows at high pressure in ARTERIES. Valves are present in HEART which allow blood to flow only towards the heart. ARTERIES divide into small vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form VENULES.