The reason fluid leaves at the arterial end of the capillary bed and returns to the venous end of the capillary bed is the difference in hydrostatic pressure.
If you are looking for the right car paint for your vehicle, then one way to find the match is to look at the VIN number and find out the correct car paint codes from this detail.
Look over the car and make sure that all the VIN numbers you can find are the same within the car. The VIN number is normally engraved or on a sticker in numerous places in the car (inside the doors, the dash, the trunk, engine, and/or quarter panels). States use the VIN number to track a cars status.