Lungs and ventilation by https://padlet.com/xueyulicool/liubzpni8dkb Explanation of human ventilation en-us 2017-03-17 00:32:23 UTC 2018-06-13 05:48:33 UTC hello@padlet.com Have a good day! xueyulicool https://padlet.com/xueyulicool/liubzpni8dkb/wish/160683302 Smile and make a hug with people~]]> 2017-03-17 00:37:36 UTC https://padlet.com/xueyulicool/liubzpni8dkb/wish/160683302 What happens when Ventilation occurs in human xueyulicool https://padlet.com/xueyulicool/liubzpni8dkb/wish/161055522 [Brief introduction of Ventilation]
  • Ventilation is the process or act of supplying a house or room continuously with fresh air.
  • Inspiration and expiration occur due to changes of volume and pressure in the thorax.
  • Organs that control changes during ventilation are internal intercostal muscles, external intercostal muscles and the diaphragm.
]]> 2017-03-20 02:36:00 UTC https://padlet.com/xueyulicool/liubzpni8dkb/wish/161055522 Inspiration xueyulicool https://padlet.com/xueyulicool/liubzpni8dkb/wish/161716795 1. The external intercostal muscles contract and the internal intercostals muscles relax, raising the ribs upwards and outwards.
2. At the same time, the diaphragm contracts and flattens.
3. Both of these actions increase the volume inside the thorax, causing the pressure inside the thorax to decrease.
4. Since atmospheric pressure is greater, air moves into the lungs and they inflate.]]> 2017-03-22 06:48:33 UTC https://padlet.com/xueyulicool/liubzpni8dkb/wish/161716795 Expiration xueyulicool https://padlet.com/xueyulicool/liubzpni8dkb/wish/161717717 1. The internal intercostal muscles contract and the external intercostal muscles relax.
2. The movement of muscles lowers the ribs downwards and inwards.
3. The muscle in the diaphragm relaxes and it bulges up due to pressure from the organ below like liver and stomach, and the movement or contraction of the abdominal muscles.
4. Relaxes of muscles decrease the volume inside the thorax, then the pressure inside the thorax increases.
5. The relax or elastic recoil of alveoli helps to force air out of the lungs.]]> 2017-03-22 06:57:46 UTC https://padlet.com/xueyulicool/liubzpni8dkb/wish/161717717 mahipauldayaram https://padlet.com/xueyulicool/liubzpni8dkb/wish/166034375 2017-04-12 08:37:10 UTC https://padlet.com/xueyulicool/liubzpni8dkb/wish/166034375