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.

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 time of toxicity, so …

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 Each bronchiole ends in spongy, tiny sacs – alveoli; each of the individual sacs is referred to as alveolus. Each alveolus fills with air when a person inhales. Together, the bronchi, bronchioles and …

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 and veins enter 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 alveolar ducts and the …

Alveoli:- Alveoli are the tiny air sacs present in the lungs that allow the rapid exchange of gases. Nephrons:- Nephrons comprise the glomerulus and tubules through which glomerular filtrate passes.

Respiration is the process through which living organisms take in oxygen and give out carbon dioxide to release energy. So, naturally, respiration is a major and vital process of gas exchange. The transport …

1. In which part of the respiratory system, gaseous exchange takes place? (a) Alveoli (b) Pharynx (c) Larynx (d) Trachea Sol. (a) Alveoli. 2. ___________ is located between two pleural sacs and is the …

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 into …