The barrier between the air in
alveolus and
blood in pulmonary capillary
consists of 3
layers and its total thickness
Answers
Answer:
3 layers of the barrier, including the capillary endothelium, alveolar epithelium, and the extracellular matrix (ECM), which has a band of type IV collagen in the center that provides the necessary strength for the barrier.
Answer:
The barrier between the air in the alveolus and blood in the pulmonary capillary consists of 3 layers and its total thickness is less than 1 mm (approximately 600nm).
Explanation:
The inspired air comes into the lungs and gets accumulated in the alveoli of the lungs. The inspired air has oxygen in it. This air passes into the nearby capillaries that surround the alveoli.
The air has to go through a barrier consisting of three 3 layers- the pneumocyte layer of the alveolar wall, the basement membrane, and the endothelial cell layer of the capillaries. The barrier is thin in nature. The total thickness is less than 1 mm.