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How are septal cells involved in keeping alveoli from collapsing?
They produce surfactant, a substance that reduces surface tension. Alveoli are very small, only 80 nanometers wide, and are flat. Therefore they have a tendency to curl up. The surfactant reduces this tendency, hence keeps the alveoli from collapsing.
Is surfactant released from type 2 pneumocytes of the alveoli?
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.
When do fetuses begin to produce surfactant?
Fetuses begin to produce surfactant in their lungs around 24-28 weeks of gestation, and its production increases as the pregnancy progresses. Surfactant is necessary for lung development and function by reducing surface tension in the alveoli, allowing for proper expansion and preventing collapse.
Alveoli are coated by a thin film of?
surfactant
The role of surfactant in relation to water?
Surfactant is used in the lungs to break water tension within the alveoli. Without it, the alveoli will collapse and you will suffocate and die.
The developing fetus does not produce lung surfactant until late its development.Explain what problem a premature infant would have if it were born before it had produced surfactant?
The lung surfactant is a substance that coats the internal surfaces of the alveoli (air sacks) of the lungs and prevents them from sticking together in the deflated state when the baby exhales. If the infant is born before it produces lung surfactant, then the alveoli will be unable to be filled with air and the baby will suffocate.
What is the fluid that lines the alveoli is produced by?
what is the name of the liquid layer that lines the alveoli
How are surfactant cella involved with keeping the alveoli from callapsing?
The surfactant doesn't allow the sides of the alveoli form sticking together. Infants that are born very early don't make surfactant and so have many problems.
What phospholipid decreases the surface tension of the alveoli?
surfactant
What is the name of the lipid substance that coats the alveoli surface?
Surfactant
What coats the inside of the alveoli to keep them open?
pericadium
Breathing properly requires the presence of what compound that affects surface tension of alveoli in the lungs?
The correct answer is Surfactant
