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 …

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, …

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 …

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 …

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 …

In the alveoli, where the partial pressure of oxygen is high, carbon dioxide gets dissociated from carbamino-haemoglobin. The enzyme carbonic anhydrase present in a high concentration in …

Further reading: Pharynx Location Bronchioles form many bag-like structures terminally, which are known as alveoli. Alveoli and alveolar ducts together take part in the exchange of gases. …

The conducting part transports the atmospheric air to the alveoli, clears it from foreign particles, humidifies and also brings the air to body temperature. Exchange part is the site of actual …

NCERT Solutions for Class 11 Biology Chapter 17 – Breathing and Exchange of Gases Respiration is an essential life process carried out by all living entities. The process of …