The diagram illustrates a blood capillary together with the tissue fluid that surrounds it. Tissue fluid is produced when fluid and dissolved substances from blood plasma move through very small spaces in the capillary wall. Most of this tissue fluid is then taken back into the blood inside the capillary. What pressures are required at points W, X, Y and Z for this system to work?
- Apressure at W = $18\,\text{mm Hg}$, pressure at X = $26\,\text{mm Hg}$, pressure at Y = $36\,\text{mm Hg}$, pressure at Z = $26\,\text{mm Hg}$
- Bpressure at W = $26\,\text{mm Hg}$, pressure at X = $26\,\text{mm Hg}$, pressure at Y = $18\,\text{mm Hg}$, pressure at Z = $36\,\text{mm Hg}$
- Cpressure at W = $26\,\text{mm Hg}$, pressure at X = $36\,\text{mm Hg}$, pressure at Y = $26\,\text{mm Hg}$, pressure at Z = $18\,\text{mm Hg}$
- Dpressure at W = $36\,\text{mm Hg}$, pressure at X = $18\,\text{mm Hg}$, pressure at Y = $26\,\text{mm Hg}$, pressure at Z = $26\,\text{mm Hg}$