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Questions tagged [pulmonology]

The study of the respiratory system and diseases of it, especially the lungs

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Why is there a layer of moist lining the inner walls of alveoli?

I'm taught that the walls of the alveoli are moist, so gaseous oxygen molecules can dissolve into this water. This then allows the dissolved oxygen (liquid state) to diffuse faster from the alveoli ...
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Does IQOS/HEETS emits CO?

I am researching the safety of IQOS (THS2.2) for heat-not-burn cigarettes (HEETS). I am particularly interested in appraising the impact of IQOS/HEETS on CO emission and inhalation. Is there ...
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Loss of nerves in asthma

This site says: VIP [vasoactive intestinal peptide] nerves are absent in severely asthmatic subjects. Mice with targeted deletion of the VIP gene exhibit histopathologic features of airway ...
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Heart failure and pleural effusion

Why does pleural effusion usually occurs in the right hemithorax in acute heart failure? Could someone explain the mechanism? Thank you.
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How pulmonary vasculature removes embolism?

This book says: Pulmonary vasculature removes emboli before they reach into systemic circulation. I can speculate that if the emboli are made of fat or clot then our body could degrade it but how ...
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539 views

Why are the walls of the bronchioles folded?

The bronchiole shown in the section above has folded epithelium, why is this so?
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1k views

Hemoglobin oxygen affinity curve

I have a general understanding of the Bohr effect, and that Hemoglobin's affinity for oxygen will shift depending on the conditions of the lungs and tissues. However, I'm struggling with the following ...
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133 views

Why is it that I can only detect smells if I breathe, and not when I hold my breath?

At school we're told that the receptors for smell (olfactory receptors) are present in the Schneiderian membrane. But I've noticed that I'm only able to detect smells only while I breathe and not when ...
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What is the ratio of breathing rate to heart rate?

Breathing rate and heart rate are directly connected. This is because the heart is connected to the lungs via the pulmonary artery. I first thought that breathing rate would be half of the heart rate ...