The alveoli are single-celled sacs of air with thin walls. It facilitates the exchange of oxygen and carbon dioxide molecules into or away from the bloodstream.

Sol: (b) Filters the air we breathe. 14. Which of these statements is true about internal respiration? (a) Production of ATP (b) Exchange of gases between the bloodstream and tissue cells (c) …

The type 1 cells are involved in gaseous exchange between the alveoli and capillaries. The thinness of these cells allows fast diffusion of gases. The type 1 cells cannot replicate at the …

Respiratory Bronchioles The respiratory zone consists of the respiratory bronchioles, alveoli and alveolar ducts. It is the main site for the exchange of O 2 and CO 2 with the blood. The …

Alveoli and alveolar ducts together take part in the exchange of gases. Bronchi, bronchioles and alveoli together constitute a lung. Each lung is covered by the pleural membrane. It is a double …

Bronchioles eventually terminate into alveoli. Alveoli are small sac-like structures that swell when air enters them. Alveoli are in close contact with the blood capillaries. Hence, alveoli are sites …

Alveoli: The structural and functional unit of the lung is an alveolus and is found in the respiratory system. Nephrons: The structural and functional unit of the kidney is a nephron and is found in …

The alveoli is the location of gaseous exchange between the respiratory system and blood capillaries. From the hilum, the lymphatic vessels, nerves, bronchus, and pulmonary arteries …

Alveoli serve primarily to increase the surface area available for gas exchange. Each of the lungs contains roughly 300 million alveoli. These tiny air sacs offer the best location for gas diffusion …

Alveoli are the small air sacs of the lungs that allow rapid gas exchange. These structures are specially built for the gas exchange process. The thickness of the alveolar membrane in total …