The parathyroid glands are four tiny glands, located in the neck, that control the body's calcium levels. Each gland is about the size of a grain of rice (weighs approximately 30 milligrams and is 3-4 millimeters in diameter).
There are now 30 NBA teams. There are two conferences with 15 teams each. There are five in each of three divisions within each conference.
The postseason included just the league winners from 1903-68, then increased to four teams in 1969 after the leagues split into divisions. In the NFL, 12 of 32 teams make the playoffs. In both the NBA and NHL, 16 of 30 teams advance to the postseason.