Alveola (Alveolus, Plural. Alveoli)

Alveolus (Alveolus, Plural Alveoli) - 1. In the lung - an air bubble of irregular shape of microscopic size. From each alveolar duct extending from the respiratory, or respiratory, bronchioles, approximately 20-30 alveoli open. The walls of the alveoli (alveolar walls) are braided from the outside with a dense network of tiny blood vessels - capillaries. The alveoli are separated by interalveolar septa and lined from the inside with alveolocytes (pneumocytes) of two types: respiratory (flattened), which, together with the capillary wall, form an air-blood (aerohematic) barrier through which gas exchange occurs between air and blood; and large (granular) ones that produce surfactant. The lungs of a newborn baby contain approximately 20 million alveoli. By about eight years, the number of alveoli in the lungs reaches 600-700 million, remaining the same in an adult (ed.).

2. DENTAL ALVEOLUS - a section of the upper or lower jaw into which the roots of the teeth are embedded (see also Lower jaw. Upper jaw). After tooth extraction, most of it is absorbed.

3. Cavity of the complex alveolar gland (see also Acinus).

4. Any other small cavity, depression or bursa.

1. Alveolar.

Alveolus (Alveolus, Plural Alveoli) - 1. In the lung - an air bubble of irregular shape of microscopic size. From each alveolar duct extending from the respiratory, or respiratory, bronchioles, approximately 20-30 alveoli open. The walls of the alveoli (alveolar walls) are braided from the outside with a dense network of tiny blood vessels - capillaries. The alveoli are separated by interalveolar septa and lined from the inside with alveolocytes (pneumocytes) of two types: respiratory (flattened), which, together with the capillary wall, form an air-blood (aerohematic) barrier through which gas exchange occurs between air and blood; and large (granular) ones that produce surfactant. The lungs of a newborn baby contain approximately 20 million alveoli. By about eight years, the number of alveoli in the lungs reaches 600-700 million, remaining the same in an adult (ed.).

2. DENTAL ALVEOLUS - a section of the upper or lower jaw into which the roots of the teeth are embedded (see also Lower jaw. Upper jaw). After tooth extraction, most of it is absorbed.

3. Cavity of the complex alveolar gland (see also Acinus).

4. Any other small cavity, depression or bursa.

1. Alveolar.

Alveolus (Alveolus, Plural Alveoli) - 1. In the lung - an air bubble of irregular shape of microscopic size. From each alveolar duct extending from the respiratory, or respiratory, bronchioles, approximately 20-30 alveoli open. The walls of the alveoli (alveolar walls) are braided from the outside with a dense network of tiny blood vessels - capillaries. The alveoli are separated by interalveolar septa and lined from the inside with alveolocytes (pneumocytes) of two types: respiratory (flattened), which, together with the capillary wall, form an air-blood (aerohematic) barrier through which gas exchange occurs between air and blood; and large (granular) ones that produce surfactant. The lungs of a newborn baby contain approximately 20 million alveoli. By about eight years, the number of alveoli in the lungs reaches 600-700 million, remaining the same in an adult (ed.).

2. DENTAL ALVEOLUS - a section of the upper or lower jaw into which the roots of the teeth are embedded (see also Lower jaw. Upper jaw). After tooth extraction, most of it is absorbed.

3. Cavity of the complex alveolar gland (see also Acinus).

4. Any other small cavity, depression or bursa.

1. Alveolar.