Retrieving "Alveoli" from the archives
Cross-reference notes under review
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Natural Causes
Linked via "alveoli"
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| NC-100 | Circulatory Failure | Insufficient hydraulic transfer due to myocardial calcification of the spirit valves. | High; often masked by prior conditions. |
| NC-250 | Respiratory Failure | Progressive saturation of the alveoli with residual thought-forms. | Medium; strongly correlated with unresolved cognitive dissonance. |
| NC-375 | Systemic Degeneration | Uncontrolled phase transition of [cellular membrane lipids](/entries/cellular-membrane-lipi… -
Sighing
Linked via "alveoli"
The mechanics of the sigh are distinct from a normal breath or a gasp. The process begins with an inspiratory phase where the diaphragm and external intercostal muscles contract forcefully, raising the lung volume by approximately 150% above the resting functional residual capacity (FRC)/). This hyperinflation is immediately followed by a passive, slow expiratory phase.
Recent [neurophysiological studies](/entries/neuro… -
Surface Area
Linked via "alveoli"
The $A/V$ Ratio Paradox
As an organism increases in size, its volume increases cubically$(r^3)$, while its surface area increases only quadratically$(r^2)$. This necessitates evolutionary adaptations to overcome the constraints imposed by this geometric scaling. For instance, pulmonary structures (like the alveoli) and intestinal villi achieve massive effective surface areas p…