Question

How are the alveoli designed to maximise the exchange of gases?

Answer 1

Alveoli is like a balloon-like structure, which is rich in blood vessels which increase the surface area of the alveoli structure and help in gas exchange. When the person inhales some amount of oxygen inside through the nostrils, oxygen gets diffused into the capillaries of the lungs.

Complete answer:
In the human respiratory tract, the various components are nostrils, larynx, nasal chamber, pharynx, trachea, epiglottis, alveoli, bronchioles, bronchi, and lungs. So in the lungs, the main oxygen is being exchanged with the carbon dioxide with the help of millions of small microscopic structures called alveoli. When the person inhales some amount of oxygen inside through the nostrils, oxygen gets diffused into the capillaries of the lungs.

The next event goes by binding with the hemoglobin and then the oxygen got pumped into the bloodstream. Whereas in the same way the carbon dioxide is expelled from the body by diffusing with the alveoli and is expelled from the body.

So if we see the structure of alveoli in a detailed manner it is seen as the thin-walled structure which has the rich supply of network of blood vessels, which helps and facilitates the exchange of gasses between the blood and air-filled inside the alveoli.

The whole structure of alveoli is like a balloon-like structure that provides so much space which will directly increase the surface area of the alveoli and helps in the exchange of gases.

Note: The parts of the human respiratory system include nostrils, larynx, nasal chamber, pharynx, trachea, alveoli, epiglottis, bronchioles, bronchi, and lungs. Alveoli help in the exchange of gases, thin-walled, richly supplied with networks of blood vessels. They help in gas exchange between the blood and the air-filled area in the lungs.