The diffusion membrane of the lungs,through which the exchange of gases occurs,is made up of which of the following layers?
- AOnly alveolar epithelium
- BAlveolar epithelium and capillary endothelium
- CAlveolar epithelium,capillary endothelium,and tunica adventitia
- DAlveolar epithelium,capillary endothelium,tunica media,and a thin layer of tunica adventitia
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What is the main site of the human respiratory system where the exchange of gases occurs?
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$(1)$ Atmospheric air enters: Inspiration :: Alveolar air released out: ..........
$(2)$ $O_2$ in alveoli: $104 \, mm \, Hg$ :: $CO_2$ in alveoli: ..........
$(1)$ Atmospheric air enters: Inspiration :: Alveolar air released out: ..........
$(2)$ $O_2$ in alveoli: $104 \, mm \, Hg$ :: $CO_2$ in alveoli: ..........
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Statement $I$: Respiratory membrane is composed of two layers of squamous epithelia,each resting on a thick basement membrane.
Statement $II$: The diffusion of a respiratory gas takes place from lower partial pressure to higher partial pressure of the same.
In the light of above statements,choose the most appropriate answer from the options given below:
Statement $I$: Respiratory membrane is composed of two layers of squamous epithelia,each resting on a thick basement membrane.
Statement $II$: The diffusion of a respiratory gas takes place from lower partial pressure to higher partial pressure of the same.
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Which of the following statements is $NOT$ correct?
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