Fig. 6

Functional relation between vessel diameter and gap area fraction. Gap size fraction from generated endfoot sheath patterns for uniform gap width of \(d=20\,\hbox {nm}\). Dots show individual realizations (\(n=800\) for each arterial and venous vessel). Solid lines are exponential curve fits (\(r_{\textrm{o}} = 0.5 d_{\textrm{o}}\) is the vessel radius including the endfoot sheath). Estimates for \(L_p^\star\) and \(C_M^\star\) (right axes) are computed with \(l_g = 1\,\upmu \hbox {m}\), a fluid viscosity of \(\mu = 0.69 \times 10 ^{-3}\,\hbox {Pa}\,\hbox {s}\) and \(\alpha =1\). Both \(L_p^\star\) and \(C_M^\star\) are proportional to \(\phi _{\textrm{g}}/l_g\)