Parathyroid chief cell. Parathyroid chief cells (also called parathyroid principal cells or simply parathyroid cells) are cells in the parathyroid glands which produce parathyroid hormone. The end result of increased secretion by the chief cells of a parathyroid gland is an increase in the serum level of Calcium. Parathyroid chief cells constitute one of the few cell types of the body that regulate intracellular calcium levels as a consequence of extracellular (or serum) changes in calcium concentration.
According to the National Basketball Association, basketball courts should be rectangular shapes that are 94 feet long and 50 feet wide, with inner dimensions including a 23 foot, 9-inch semicircular three-point arc at either end of the court; however, dimensions for other leagues and age groups may differ.
The Professional NBA and (WNBA) Court is 94 feet long and 50 feet wide. Note: WNBA Basketball Court Dimensions are the same in every respect as the NBA. The Foul Line: For all courts including the NBA, the âfoul lineâ distance is 15 feet from the foul line to the front of the backboard.The keyâ (sometimes called âthe laneâ) for an NBA/Professional court is 16 feet wide. Regulation courts have the backboard extending out 4 feet over the baseline into the key. A 6 foot arc (half circle) extends from the foul line away from the basket to complete the key.