Differences between models and the breathing system of human beings by Wong Ho Yin Howard https://padlet.com/spcc_why1/breathingsystem2A en-us 2017-11-16 00:07:53 UTC 2018-04-03 09:48:30 UTC hello@padlet.com Group 8 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480890 1(a) There are nerves on lungs and blood flowing in blood vessels inside the lungs but not inside the bell jar model.
1(b) Both the exterior and the inner structure of the respiratory system aren't shown in the bell jar model.
2(a) The rib-cage model cannot imitate the process carried out by respiratory system.
2(b) Respiratory system needs oxygen to work and it will produce carbon dioxide but it will not when we are using the rib-cage model.]]> 2017-11-16 00:08:38 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480890 Group 7 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480902 1(a) there is no blood flowing inside the blood vessel and air sac which cannot involve with gaseous exchange between carbon dioxide in the blood and oxygen in the air sac
1(b) the upper respiratory system is not shown in the model including the nose and mouth, trachea
1(c) the bell jar model cannot demonstrate how our lungs are moving outwards and upwards while breathing
2(a) the ribs and backbone are not absolutely straight like the one shown on the rib-cage model
2(b) rubber band is elastic while muscles near the ribs are not (just contract and relax)

]]> 2017-11-16 00:08:44 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480902 Group 6 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480912 1(a) There is no blood,air sacs, blood vessels and bronchus in the balloon 
1(b) There is not a mouth or a nose
2(a)The rib-cage model requires people to stimulate the action of the intercostal muscles manually
2(b) The rib's angle of rotation about the axis (joint or springy thing) cannot be so great or it will rip apart]]> 2017-11-16 00:08:49 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480912 Group 5 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480927 1(a) The balloons cannot accurately simulate the human lungs as their shapes and sizes are very different
1(b)There is no intercostal muscles inside the model
2(a) the ribs are not straight in the human body
2(b) the model needs external things to function but our muscles can control the movement of our bones]]> 2017-11-16 00:08:53 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480927 Group 4 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480935 1(a) The process of gaseous exchange won't be carried out in the model. 
1(b)The diaphragm in bell jar model is pulled down during inhalation, whereas in actual respiration, the diaphragm is flattened.

2(a) muscles are needed to control the movement of the rib-cage which the model does not have any.
2(b)It does not show the air flow but only the movement of the ribs. 
2(c)It can only show the side but not a 3D shape like a real chest
]]> 2017-11-16 00:08:57 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480935 Group 3 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480940 1(a) We can see the lung(balloon) inflated.
1(b)We cannot see the chest go upward.
1(c) We cannot see the detail of the breathing system, for example: the air sac. 
1(d) There are no nose or mouth.
2(a) We can see the bones around the lungs.
2(b) We can see the shape of our body while breathing
2(c) We cannot see the details of the breathing system, for example: the lungs, air sac.
2(c) The modeltha

]]> 2017-11-16 00:09:01 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480940 Group 2 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480952 1(a) there are no blood vessels in the bell jar model
1(b) 
2(a) there are only two ribs shown in the model but we have more than that
2(b)]]> 2017-11-16 00:09:05 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480952 Group 1 spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207480961 1(a) Glass tube/trachea: Glass is rigid and inflexible in the bell jar unlike the cartilage bound trachea in human body.
1(b) The model did not show details inside the lungs. e.g. air sacs, blood vessels.
2(a) The model can only move upwards and downwards, but not moving outwards and inwards. 
2(b) The rib-cage is made with plastic but the one in human is made out of bones.
2(c) The backbone and ribs of human are not entirely straight.
]]> 2017-11-16 00:09:09 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207480961 Mr. Wong Ho Yin spcc_why1 https://padlet.com/spcc_why1/breathingsystem2A/wish/207481001 List the differences between 
1. the bell jar model,
(a) The bell jar is rigid so it cannot move to demonstrate the movement of the ribs in our body.
(b) the rubber sheet is pushed up to demonstrate breathing out.  The diaphragm in our body relaxes in order to form a dome-shape itself. For breathing in, the rubber sheet is released to become flattened.  The diaphragm contracts to become flattened.

2. the rib-cage model
(a) In breathing in, the intercostal muscles contract.  But the rubber band in the model is under a lower tension.
2(b)It does not show the air flow but only the movement of the ribs.
2(c) the model needs external force to function but our muscles can control the movement of our ribs.

from the breathing system of human beings. 

Refer to the working principle and mechanism of breathing for the differences between a model and the breathing system of human beings.]]> 2017-11-16 00:09:36 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/207481001 https://padlet.com/spcc_why1/breathingsystem2A/wish/218278888 2018-01-02 06:13:28 UTC https://padlet.com/spcc_why1/breathingsystem2A/wish/218278888