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trachea walls do not collapse when there is less air in it because it is suppoerted by rings of cartillage.
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(a) The insides of the nose have fine hairs in it which traps the impurities in the air and in the process cleans the gas while it passes through the nasal passage.
(b) The walls of the trachea do not collapse even when there is less air, as it is supported by the rings of cartilage shaped in the alphabet C. This provides the support to the trachea and the latter does not collapse in the lack of air.
(c) The oxygen inhaled through the body gets transferred to every cell and the respiration occurs and then the carbon dioxide from the cells gets transferred through the deoxygenated blood medium to the heart and then the gas is expelled out from the lungs.
(d) The lungs are light and are present with a large number of air chambers through which the gas exchange occurs. They inflate when inhaled and upon exhalation, they deflate.
Learn more about breathing:
Measure the breathing rate of the members of your family and some of your friends. Investigate:
(c) If the breathing rate of children is different from that of adults.
(d) If the breathing rate of males is different from that of females.
If there is a difference in any of these cases, try to find the reason
Why breathing through the nose is said to be healthier than breathing through the mouth
(a) Our nasal cavity is lined with small hair like structures called cilia. It also produces a mucilaginous substance called mucus. Both cilia and mucus clean up the air we breathe in.
(b) The walls of trachea do not collapse when there is no air because they are attached with tracheal cartilage which supports it to stay in shape.
(c) When we inhale air, it enters the lungs and then move to the rest of the body through air blood barrier via capillaries similarly carbon dioxide from the blood enters the lungs and taken out.
(d) Lungs contain small grape like structures called bronchioles which expands the surface air and maximize the exchange of gases.
1. The trachea is not a very collapsible organ like the oesophagus or the food pipe.
So there needs to be a force.
This force helps in the movement of trachea.
This leads to the closing of trachea which is not possible when the air is less.
This is because there is no force and force is required for .
2. when the blood with O2 goes to the cells in our body the oxygen is taken by the cells and the CO2 is given out of the cells and is carried by the blood to the heart and then to the lungs , but when we take in O2 with the help of respiration the lungs release the carbon dioxide out and take the oxygen and supply it to the blood and again blood containing O2 goes to our body cells . This is how exchange of oxygen with carbon dioxide takes place.
HOPE IT'S HELPFUL MARK AS BRAINLIST IF.
a-the inner lining of nostril is lined by Nestle here when the air passes through the nasal passage the hair trap the dust particles and clean air enter in our body
b- it is supported by C shaped rings of capillaries which hold them in place when there is less air inside it so the wall of trachea do not collapse even there is a little
c-inhaled oxygen is removed from the alveoli to the blood in the capillaries and carbon dioxide moves from the blood in the capillaries so in this process the oxygen and the carbon dioxide separate during respiration
d-lungs maximise the area of gaseous exchange through the presence of large number of alveoli which are richly supplied with blood
I don't know answer answers
The structure of the Trachea is strong enough to hold it right even though there is less air in it.
Cartilage help the Trachea to do this.
The trachea is supported by c-shaped rings of cartilage which hold them in place when there is less air inside it. Due to this, the walls of trachea do not collapse even when there is a little air.
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