Am pretty sure its called the pulmonary surfactant that's produced from the lungs
Surfactant! or 'Pulmonary Surfactant' Just had one of those moments too :)
The lipid-based molecule that coats the air-exposed surface of the alveolus is called pulmonary surfactant. Pulmonary surfactant reduces surface tension, preventing alveolar collapse and allowing for efficient gas exchange in the lungs.
Alveoli does not collapse because lungs always have a residual volume which prevents the alveoli to collapse.
Type II alveolar cells, also known as pneumocytes, produce pulmonary surfactant. This fluid is a complex mixture of lipids and proteins that reduces surface tension in the alveoli, preventing their collapse during exhalation and facilitating gas exchange. Surfactant plays a crucial role in maintaining lung stability and efficiency in breathing.
surface tension of fluid lining the alveoli pull fluid from alveolar wall by average pressure= -3 mmHg in normal lung , but without surfactant it's increased to -20 mmHg , thus massive filtration of the fluid leads to pulmonary edema .
type II alveolar cells
between 28 and 30 weeks
The Great (Type 2) Alveolar cells secrete pulmonary surfactant and prevent the cells from collasping.
Yes, surfactant is released from type II pneumocytes in the alveoli. These specialized cells produce and secrete pulmonary surfactant, which reduces surface tension in the alveoli, preventing their collapse during exhalation and aiding in gas exchange. Surfactant is crucial for maintaining normal lung function and respiratory mechanics.
Pulmonary surfactant...see link for more information.
what is the name of the liquid layer that lines the alveoli