Question

2 main function of alveoli???

Answer 1

Central Function

Without the alveoli, respiration would not be possible. When a person breathes, air enters their body through the trachea. The air is then separated by the bronchi, which leads the air into both lungs. After the bronchi tubes, the air travels through a network of tunnels inside the lungs. At the end of each air tunnel is an alveoli sacs. When air enters into the alveoli sac, the blood vessels around the sac absorb the air immediately. Whatever gas is breathed in goes through the sac and is absorbed into the blood. The blood immediately separates the oxygen from the other gases in the air, most notably carbon dioxide. Simultaneously, the carbon dioxide is pushed back into the alveoli where, in the act of exhaling, the carbon dioxide is removed from the body.

Tissue Specifics

It is estimated that the average, healthy adult has over 300 million alveoli. Alveoli are small sacs of tissues in each lung surrounded by capillaries and blood vessels. There is a thin cell layer between the sacs and the surrounding blood vessels. There is also a thin fluid that surrounds the alveoli sac. The fluid and thin cell wall allows air to pass through the cells and into the bloodstream. The alveoli physically expand when you inhale to absorb as much air as possible. The alveoli sacs relax when you exhale.

Answer 2

heya friend ... it's your answer just below... and do mark the brainlist answer

the two main function of alveoli are:-
●they are balloon like structure which help in exchange of gases.
●they are thin walled, in which capillaries will take the oxygenated blood .

hope it helps uh.☺️