What is Pulmonary Surfactant? | Physiology скачать в хорошем качестве

What is Pulmonary Surfactant? | Physiology

You will learn what surface tension is in this brief video on respiratory physiology, as well as how pulmonary surfactants function to reduce it. Let's investigate this physiology video to see what we can discover. ▬ 📌 What is Lung Surfactant? Surfactant is a surface-acting material or agent, that is responsible for decreasing the surface tension of a fluid. When it lines the epithelium of the alveoli in the lungs is known as pulmonary surfactant or lung surfactant and decreases the surface tension on the alveolar membrane. According to Laplace’s law, the pressure in a bubble or alveolus, that is trying to open it, is directly proportional to the surface tension (T) of the molecules and inversely proportional to the radius of the alveolus (r). P ∝ T/r So, a large alveolus requires a lower pressure to keep it open, so it does not collapse easily. While a smaller alveolus can collapse readily, because of the large amount of pressure it needs to keep the alveolus open. Reducing surface tension also reduces pressure and prevents alveolar collapse, and that’s done by surfactants. Which is a lipoprotein complex. Pulmonary surfactant is produced by Type II pneumocytes and spreads over alveoli, reducing the surface tension. The major phospholipids present in the surfactant is dipalmitoylphosphatidylcholine (DPPC). The video goes into great depth about it. Let's go for it! ▬ 🎬 5500+ sqadia.com Medical Videos ▬▬▬▬▬▬▬▬▬▬ 👩🏻‍⚕️ Accessible Medical Student Education 24/7/365 💡 Simplifying Medical Learning 💪 Study Hard, Dream Big, Achieve More