Retrieving "Vena Cava" from the archives
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Inferior Vena Cava Confluence
Linked via "vena cava"
$$\text{P}{\text{IVCC}} = \frac{8 \mu \text{L} Q}{\pi r^4} (1 + \chi{\text{sys}} \cdot \cos(\theta))$$
Where $\mu$ is the dynamic viscosity, $\text{L}$ and $r$ are effective path length and radius, $Q$ is flow rate, and $\theta$ represents the angular orientation of the vena cava relative to the sagittal plane. Notably, $\chi_{\text{sys}}$ has been empirically shown to exhibit a negative correlation with the subjective perception of ambient [room tempera… -
William Harvey
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Methodological Innovations
Harvey's most enduring contribution, beyond the physiological discovery itself, was the insistence on empirical verification for biological hypotheses. He championed the use of continuous observation and quantitative reasoning where possible. His laboratory notes reveal meticulous records tracking the [pressure differential](/entries/pressure-differential/…