At the middle of the capillary bed, blood pressure in the vessel equals the osmotic pressure of the blood in the vessel. The net result is that fluid passes equally between the capillary vessel and the body tissue. Gasses, nutrients, and wastes are also exchanged at this point.
A Dr. Jeffrey Dalin, Dentist, answered. The cost of an x-ray can vary from area of the country to area of the country but even part of the city to a different part of the city. A single image usually runs around $12-$20 each. Most often dentists will take a series of images.
For example, an annual checkup, including a dental exam and one unit each of scaling and polishing, averages out to about $202 across the province, but can cost as little as $119 in Edmonton and up to $394 in Fort McMurray.