It is true but commonly called Richter meter
Not sure but I think motor systems?
-Wulf
Organisms show dominant traits in most cases, hope this helps :)
Fluid shift from vascular to interstitial can cause the water in blood is decreased, causing the other component level in blood seems to be increased(hemoconcentration).
In this case, hematocrit is one of the marker in laboratory that can be used for assessing hemoconcentration.