Amy-Ventilation by https://padlet.com/550105804/mk9o6pzc0gze Made with love en-us 2017-03-16 00:14:56 UTC 2023-06-21 03:17:50 UTC hello@padlet.com 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160406199 2017-03-16 01:14:15 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160406199 Inspiration 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160406349 2017-03-16 01:15:31 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160406349 step1 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160406373 the external intercostal muscles contract and the internal intercostals muscle relax, rising the ribs upwards and outwards]]> 2017-03-16 01:15:41 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160406373 step4 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160406395 both of these actions increase the volume inside the thorax,causing the pressure inside the thorax to decrease]]> 2017-03-16 01:15:50 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160406395 step2 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160406410 at the same time,the diaphragm contracts and flattens ]]> 2017-03-16 01:15:57 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160406410 step3 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160408093 since atmospheric pressure is greater, air moves into the lungs and they inflate]]> 2017-03-16 01:29:37 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160408093 Expiration 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160408901 2017-03-16 01:36:50 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160408901 step1 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160408966 The internal intercostal muscles contract and the external intercostal muscles relax]]> 2017-03-16 01:37:30 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160408966 step2 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160409160 This lowers the ribs downwards and inwards.]]> 2017-03-16 01:39:26 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160409160 step3 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/160409252 The muscle in the diaphragm relaxes and it bulges to due to pressure from the organs below.]]> 2017-03-16 01:40:14 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/160409252 Step4 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162091301 Both of these actions decrease the volume inside the thorax,causing the pressure inside the thorax to increase.]]> 2017-03-23 12:10:41 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162091301 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162094470 2017-03-23 12:22:49 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162094470 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162140575 2017-03-23 14:21:30 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162140575 How does ventilation happen? 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162142035 2017-03-23 14:25:11 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162142035 (1) 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162142237 Ventilation requires pressure changes occur in the lungs,so that air can be forced in an out of the alveoli.]]> 2017-03-23 14:25:46 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162142237 (2) 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162143472 The pressure changes are bought about by the movement of two sets of muscles.]]> 2017-03-23 14:28:52 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162143472 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162183514 2017-03-23 16:03:00 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162183514 (3)When we breathe in, the air enters the lungs, and the pressure in the lungs changes from high to low. 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162183516 2017-03-23 16:03:00 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162183516 (4)During exercise when inspiration increases, the external intercostal muscles are recruited to help with the increase in ventilation rate.  They work to lift the ribs up and outwards, further increasing the chest cavity and enabling more air to be inspired. 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162183899 2017-03-23 16:03:47 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162183899 (5) 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162184540 As we breathe out the opposite happens as the diaphragm relaxes and pushes upwards,as seen in the right image above.  This reduces the size of the chest cavity making the pressure within the lungs higher and results in air being exhaled. 

]]> 2017-03-23 16:05:15 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162184540 (6) 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162188907 Expiration is generally a passive process that does not require muscle contraction.  As the muscles of inspiration relax and return to their resting positions air is forced out of the lungs as the pressure within them increases.

]]> 2017-03-23 16:12:49 UTC https://padlet.com/550105804/mk9o6pzc0gze/wish/162188907 (7) 550105804 https://padlet.com/550105804/mk9o6pzc0gze/wish/162189128 However, when needed, active and or forced expiration can be completed by voluntary contraction of the abdominals and internal intercostal muscles,this further reduces the volume within the chest cavity and more air is exhaled.

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