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.
How to Make a Basketball Court. A full basketball court provides the luxury of official dimensions and the ability to install regulation hoops and lines. Building a basketball court requires a lot of space, since regulation courts can be as large as 94 feet (28.6 m) long.Use these steps to build a basketball court. The out-of-bounds line should be 2 to 3 inches (5.08 to 7.62 cm) thick surrounding the entire court. 2  The center line runs horizontally from one side to the other directly in the middle of the court. 3  The free-throw line is exactly 15 feet (4.57 m) from the hoop and 12 feet (3.65 m) long.