The Respiratory system. by KAITLYN REYNOLDS https://padlet.com/37321633/6dee1pe5soznyu7i Revision tool for my biology unit 5 en-us 2020-11-05 13:18:41 UTC 2020-11-05 13:41:09 UTC hello@padlet.com Large surface area 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893833633 There are millions of alveoli which allows more space for gas molecules to pass through. ]]> 2020-11-05 13:22:18 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893833633 Short diffusion pathway 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893839718 The walls of the alveoli and capillaries are only one cell thick this allows easy diffusion.]]> 2020-11-05 13:24:08 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893839718 Capillary network 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893847171 Each of the alveoli is close to a capillary. ]]> 2020-11-05 13:26:28 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893847171 Maintenance of diffusion gradients 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893851020 O2 diffuses down the gradient from the alveoli to the blood and CO2 diffuses up.]]> 2020-11-05 13:27:37 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893851020 Moisture 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893856473 Layer of moisture lines the alveoli because gases only dissolve if diffused]]> 2020-11-05 13:29:13 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893856473 Surfactent 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893860613 Chemical that is produced by the lungs to stop the alveoli from collapsing this reduces the surface tension of H2O]]> 2020-11-05 13:30:31 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893860613 One cell thick 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893865660 The alveoli is only one cell thick to make a short diffusion path.]]> 2020-11-05 13:31:57 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893865660 Cartilage 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893868028 In the trachea and bronchus there is cartilage. The cartilage in the trachea is C-shaped and is to maintain an open airway. In the bronchus the cartilage is a different shape. ]]> 2020-11-05 13:32:41 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893868028 Pleural/serous membrane 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893873541 - Decrease friction
- Prevents lungs from adhering (sticking) to body cavity wall.]]> 2020-11-05 13:34:16 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893873541 Ciliated cells 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893878264 Found in trachea and bronchus. The jobs is to waft mucus containing any dust of harmful microorganisms away from the lungs.]]> 2020-11-05 13:35:38 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893878264 Goblet cells 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893884104 The job of the goblet cells is to secret mucus and they line the trachea. ]]> 2020-11-05 13:37:15 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893884104 Capillary walls 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893888347 The capillary walls are made from squamous endothelial cells]]> 2020-11-05 13:38:20 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893888347 Alveoli walls 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893892649 The alveoli walls are made out of squamous epithelium walls. ]]> 2020-11-05 13:39:28 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893892649 Elastin 37321633 https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893895549 There is elastin in all of the structure this is to allow stretch and recoil. ]]> 2020-11-05 13:40:14 UTC https://padlet.com/37321633/6dee1pe5soznyu7i/wish/893895549