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 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 …

Respiratory system of Humans Breathing involves gaseous exchange through inhalation and exhalation. The human respiratory system has the following main structures – Nose, mouth, …

The alveoli are cup-shaped air spaces in the lungs that help in the exchange of O 2 and CO 2. They make up approximately 90% of the lung volume. The alveoli are seen as scattered-out …

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 are located at the tips of the respiratory tree's branches. This phrase refers to the network of airways that resembles a tree and carries air to the lungs. Hence, the statement “They sit at …

Alveoli of lungs are lined by epithelium: The alveoli are lined by simple squamous epithelium which is coated with a thin film of lecithin, a phospholipid. What purpose does this serve?

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 …

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 …

In the alveoli, the partial pressure of oxygen is high which favours the formation of oxyhaemoglobin. Other factors that favour oxyhaemoglobin formation are low pCO 2, less …