Each kidney is about 4 or 5 inches long -- about the size of a fist. The kidneys' function are to filter the blood. All the blood in our bodies passes through the kidneys several times a day. The kidneys remove wastes, control the body's fluid balance, and regulate the balance of electrolytes.
Caffeine by Type of Brewed Coffee. Like all coffee drinks, caffeine levels vary greatly - due to variations in coffee blend, exact amount of ground coffee used, and brewing technique. The value of caffeine in brewed coffee featured above is an average, with values generally between 64 and 272 milligrams per cup. Because brewed coffee requires that the water is in contact with the grinds for a long time, this leads to a higher caffeine concentration (and sometimes an over-extracted taste).
Report Abuse. The caffeine content of an average 5 ounce cup of coffee can vary from 40-150 mg. Two influencing factors are the variety of coffee bean and where it is grown; both can be affected by such things as soil conditions, length of growing season, and time of harvest.he drip method, with fine ground, used in machines like Mr. Coffee, generally yields the highest amount of caffeine, ranging from 110-150 mg per five ounce cup. Percolated coffee is next highest in caffeine, ranging from 64-124 mg.