Respiratory system - The steps involved in breathing
7 important questions on Respiratory system - The steps involved in breathing
What is boyle's law and what effect does it have on respiration?
because the volume of the lungs increased, air pressure in the atmosphere is higher than the pressure in the lungs. Air then wants to move into the aread of low pressure until no difference exists.
Pulmonary ventilation is dependent on what three tyeps of pressue?
Intra-aveolar pressure
Intrapleuaral pressure - is the pressure in the pleural cavity which is between the chest and the lung
At rest (in relation to breathing) what is the diaphragm doing? What is happening with air flow and what is the pressure like in the aveolar?
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What happens in the lungs and in the surrounding muscles when inhaling.
During deep inhalation the scalene and sternocleidomastoid muslces expand the chest further, thereby creating a greater drop in aveolar pressure.
What happens in the lungs and surrounding muscles during exhalation?
During forced exhalations, the internal intercostal and abdominal muslces contract, thereby reducing the size of teh the chest cavity furhter creating a greater increase in aveolar pressure.
What is the highlighted muscle called.
Label the sternocliedomastoid, diaphragm, external intercostals and the scalene
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