The absorption of nutrients and exchange of respiratory gases
The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in
- veins
- arteries
- heart
- capillaries
Answer
Capillaries are the extremely thin blood vessels where exchange of substances and absorption of nutrients take place. Their thin walls facilitate the exchange.
They connect arteries that carry oxygenated blood from the heart to veins that carry deoxygenated blood from all the parts of body to the heart.
The correct option is D.