How are lungs adapted to make diffusion efficient?

Question

How are lungs adapted to make diffusion efficient?

Answer 1

The internal surface of lungs is 40 times greater than that of external surface area.There are 100 million alveoli( air spaces). Each alveolus is lined by a single layer of cuboidal- flattened cells. Just out side of the alveoli is network of blood capillaries. These conditions facilitate diffusion of gases from RBC contained in the single layered blood capillaries to the air contained in the single layered alveoli.

Answer 2

Lungs have high surface area permitting efficient diffusion by increasing the area through which the interface can take place. In addition, surfactant facilitates the ability of the lungs to efficiently permit diffusion without loosing too much of the important stuff like water.

Answer 3

The Breathing mechanism is the action of in and out of your chest when your lungs expands and relax. It occurs with changing of the pressure of the thorax, outside our body the air is a higher pressure than the air within our body. When you, breath in the air pressure levels out; this is called diffusion, it is the movement of the gas in your respiratory system. Due to the gas exchange which is the delivery of the oxygen to the lungs then into the blood stream, this eliminates the carbon dioxide in the blood to be passed into the lungs to be exhaled. Gas exchange is located in the lungs but more specifically the alveoli through to the capillaries which are tiny blood vessels that lead into the main blood stream. The lungs have adapted over the years to enable diffusion to take place. The alveoli’s have adapted more so to allow the exchange of the gas more efficient. They have adapted in many ways such as the lung surface is greater that a lot of any other of your body organ surfaces…