Question

What are veins?
What are capillaries?
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Answer 1

Explanation:

Veins are vessels of the circulatory system that support circulation by conveying blood to the heart. Blood flowing through the circulatory system transports nutrients, oxygen, and water to cells throughout the body.

Capillaries are tiny blood vessels connecting arteries to veins. These blood vessels carry oxygen and nutrients to individual cells throughout the body.

Answer 2

Answer:

$\sf\red{Veins}$☟︎︎︎

• Veins are the vessels which 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 which allow blood to flow only towards the heart .

$\sf\red{Capillaries}$☟︎︎︎

• The capillaries are extremely thin tubes.The capillaries join to form veins which empty into the heart.