Respiratory zone
Encyclopedia
The respiratory zone is the site of O2 and CO2 exchange with the blood
.
The respiratory bronchiole
s and the alveolar duct
s are responsible for 10% of the gas exchange. The alveoli
are responsible for the other 90%.
The respiratory zone represents the 16th through the 23rd division of the respiratory tract
.
Blood
Blood is a specialized bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells....
.
The respiratory bronchiole
Respiratory bronchiole
The respiratory bronchioles are interrupted by alveoli which are thin walled evaginations. Alveolar ducts are distal continuations of the respiratory bronchioles.-External links:*...
s and the alveolar duct
Alveolar duct
Alveolar ducts are the tiny end ducts of the branching airways that fill the lungs. Each lung holds approximately 1.5 to 2 million of them. The tubules divide into two or three alveolar sacs at the distal end. They are formed from the confluence openings of several alveoli...
s are responsible for 10% of the gas exchange. The alveoli
Pulmonary alveolus
An alveolus is an anatomical structure that has the form of a hollow cavity. Found in the lung parenchyma, the pulmonary alveoli are the dead ends of the respiratory tree, which outcrop from either alveolar sacs or alveolar ducts, which are both sites of gas exchange with the blood as well...
are responsible for the other 90%.
The respiratory zone represents the 16th through the 23rd division of the respiratory tract
Respiratory tract
In humans the respiratory tract is the part of the anatomy involved with the process of respiration.The respiratory tract is divided into 3 segments:*Upper respiratory tract: nose and nasal passages, paranasal sinuses, and throat or pharynx...
.
