What Is Alveoli Class 10Th

Alveoli are tiny air sacs present in the lungs which appears as a bunch of grapes. These are also known as pulmonary alveoli. They mainly promote the exchange of gases.

What is alveoli in a sentence?

Alveoli sentence example. The respiratory bronchioles have single alveoli off their walls. Inside the lungs the bronchi divide into smaller and smaller airways until they end up as small air sacs called alveoli .

What is an alveoli class7?

The pouch-like air-sacs at the ends of the smallest bronchioles are called alveoli. The walls of alveoli are very thin and they are surrounded by very thin blood capillaries. The exchange of gases between the air and blood takes place takes place across the walls of the alveoli.