The parathyroids produce a hormone called parathyroid hormone (PTH). PTHPTH-parathyroid hormone raises the blood calcium level by: 1  breaking down the bone (where most of the body's calcium is stored) and causing calcium release. 2  increasing the body's ability to absorb calcium from food.THPTH-parathyroid hormone raises the blood calcium level by: 1  breaking down the bone (where most of the body's calcium is stored) and causing calcium release. 2  increasing the body's ability to absorb calcium from food.
DN = Diameter Nominal. The term Diameter Nominal refers to the internal diameter of a pipe. Together with the nominal pressure rating and the materials class, all dimensions of a piping line, e. g. flange dimensions, are defined by indicating the nominal diameter. Steel is often not specified, but assumed as material.
DEFINITION of 'Nominal'. An unadjusted rate, value or change in value. This type of measure often reflects the current situation, such as the current price of a car, and doesn't make adjustments to reflect factors such as seasonality or inflation, which provide a more accurate measure in real terms.Next Up.his type of measure often reflects the current situation, such as the current price of a car, and doesn't make adjustments to reflect factors such as seasonality or inflation, which provide a more accurate measure in real terms.