Questions tagged [pulmonology]

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

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46 views

Is breathing a reflex action or is it an intrinsic process?

The process of breathing is controlled by respiratory centers in the brain stem. Do these centers have an innate activity, i.e., just send out signals to breathing muscles intrinsically, and have the ...
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1answer
21 views

How does lipoid pneumonia lead to acute respiratory distress syndrome (ARDS)?

How does lipoid pneumonia lead to acute respiratory distress syndrome (ARDS)? The vaping illnesses that have been happening on the news in the United States are being caused by the federal ...
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1answer
379 views

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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0answers
86 views

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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0answers
108 views

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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0answers
44 views

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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25 views

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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1answer
925 views

Why are the walls of the bronchioles folded?

The bronchiole shown in the section above has folded epithelium, why is this so?
6
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1answer
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 ...
6
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1answer
231 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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2answers
28k views

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 ...