Table 1.
The typical parameter values of human and mouse placenta based on experimental measurements.
| mouse ref. |
|||||
|---|---|---|---|---|---|
| stages of gestation |
|||||
| description | unit | human in the third trimester (references) | E13.5 | E15.5 | E17.5 |
| umbilical artery length, L0 | m | 0.3 − 0.7 [44] | 0.0056 [45] | 0.0056 [45] | 0.0056 [45] |
| umbilical artery diam. from CT, d0 | m | 0.004 [43] | 0.00032 [36] | 0.00046 [36] | 0.00054 [36] |
| coefficient of diffusion (oxygen), Dox | m2 s−1 | 1.7 × 10−9 [14] | 1.7 × 10−9 [14] | 1.7 × 10−9 [14] | 1.7 × 10−9 [14] |
| experimentally measured mean umbilical artery blood velocity, Vmean | m s−1 | — | 2 [33] | 25 [33] | 31 [33] |
| umbilical artery blood flow rate, Q | ml min−1 | 500 [39] | 0.12 [36] | 0.246 [36] | 0.426 [36] |
| blood viscosity, μb | Pa s | 4 × 10−3 | 4 × 10−3 | 4 × 10−3 | 4 × 10−3 |
| blood density, ρb | kg m−3 | 1000 | 1000 | 1000 | 1000 |
| partial input pressure, Pinput | mmHg | 8 − 18 [21] | — | — | — |
| partial output pressure, Poutput | mmHg | 22 − 37 [21] | — | — | — |
| the number of cotyledons, α | — | 60–100 [39,40] | 1 | 1 | 1 |