how are Alveoli designed to maximize the exchange of gases ?

The alveoli (microscopic air sacs) in the lungs are adapted to maximize gas exchange - the membrane is thin and the blood capillaries are close to the membrane, so the distance for diffusion of gases is very small. There is also a large amount of carbon dioxide in the blood around the alveoli and a large amount of oxygen inside the alveolus, so the concentration gradient encourages oxygen to diffuse in and the carbon dioxide to diffuse out. There are also millions of alveoli in the lungs, which gives the lungs a large surface area for diffusion and a large capacity for air.
  • 119

 The alveoli are the small balloon-like structures present in the lungs. The walls of the alveoli consist of extensive network of blood vessels. Each lung contains 300−350 million alveoli, making it a total of approximately 700 million in both the lungs. The alveolar surface when spread out covers about 80 m2 area. This large surface area makes the gaseous exchange more efficient.

Alveoli and capillaries

  • 12

Alveoli provide a surface for the exchange of gases. An extensive network of blood vessels is present in the wall of the alveoli. By lifting our ribs and flatten the diaphragm, the chest cavity becomes spacious. Air is sucked into the lungs and alveoli. The oxygen from the breath, diffuses into the blood and CO2 from the blood brought from the body, diffuses out into the air.

  • 15

The alveoli (microscopic air sacs) in the lungs are adapted to maximizegas exchange- the membrane is thin and the blood capillaries are close to the membrane, so the distance for diffusion of gases is very small. There is also a large amount ofcarbon dioxidein the bloodaround the alveoli and a large amount of oxygen inside the alveolus, so the concentration gradient encourages oxygen to diffuse in and the carbon dioxide to diffuse out. There are also millions of alveoli in the lungs, which gives the lungs a large surface area for diffusion and a large capacity for air.

plzzzzz...... like if it helpzzz...... :D :D :D
  • 13
The wall of alveoli contains a fine network of blood capillaries. This ensures maximum exchange of gases.
  • 35
Thanks Ridhima.....
I liked your answer....
  • 2
The alveoli are thin walled and richly supplied with a network of blood vessels to facilitate exchange of gases between blood and the air filled in alveoli. they have balloon – like structure that provide maximum surface area for exchange of gases.
  • 25
yes Ridhima answer is write 
  • -2
1.Alveoli are the site for exchange of gases. The lungs get filled up with air during the process of inhalation as ribs are lifted up and diaphragm is flattened.
2.The air that is rushed inside the lungs fills the numerous alveoli (by the partial pressure) increase the surface area for gaseous exchange making the process of respiration more efficient.
 
  • 6
the alveoli has  network of blood capillaries  which maximize the exchange of gases
  • 6
Alveoli are the site for exchange of gases. The air, when inhaled rushes into the lungs and fills the alveoli and these have a network of capillaries which maximize the exchange of gases. Please like this answer. If you do so I can give more answers for 10th standard NCERT questions.
  • 8
There are
  • 0
See answer 9

  • 3
See answer 9

  • 20
Alveoli are balloon like structure they are richly supplied with blood vesselsand thin walled
  • 4
Alveoli is designed to maximise gaseous exchange because it has high surface area.For example if millions of alveoli were expanded then it would give a total area of 80 sq.m
  • 4
The alveoli are thin walled and richly supplied with a network of blood vessels to facilitate exchange of gases between blood and the air filled in alveoli. they have balloon ? like structure that provide maximum surface area for exchange of gases.
  • 1
alveoli are the ballon shaped like strucure which help for exchange for gaseous exchange.
  • 2
Please find this answer

  • 3
You are so hot
  • -1
Noureen ur ans is write
  • 1
Iuui
  • 1
Bcvhfhjvfh
  • 3
F****** go f****ur gf
  • 1
Padmabati Jena ur r ass who is hot u fuc*
  • -1
Bro go ask seema m'am
  • 1
Alvoeli  are small pouches/ sacs like structures. They are surrounded by blood capillaries. More than a million of alvoeli  are present in the lungs. The presence of millions of alvoeli in the lungs provides a large surface area for the exchange of the gases. When we  breath in the alvoeli expand and maximise the exchange of gases.
  • 2
Alveoli are ballon like structures and are very thinwalled
When air enters into it it inflates to maximise the area
  • 0
Alveoli are balloon -like structures present in lungs .The walls of the alveoli contain extensive network of blood vessels where diffusion of o2 and co2 takes place. Hence, the presence of millions of alveoli in lungs provides a very large surface area for exchange of gases.
  • 0
how are alveloi designed to increase the rate of diffusion
 
  • 0
What are you looking for?