Question

Cup shaped cavities, supplied with rich network of blood capillaries are called -
Lungs
Bronchioles
Bronchus
Alveolus​

Answer 1

Answer:

Alveolus​.

many tiny air sacs of the lungs which allow for rapid gaseous exchange

Answer 2

Answer:

option d is the answer I think

Explanation:

i am not sure

Each alveolus is cup-shaped with very thin walls. It's surrounded by networks of blood vessels called capillaries that also have thin walls. The oxygen you breathe in diffuses through the alveoli and the capillaries into the blood