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.
National Football League. The National Football League (also called the NFL) is an American football league. There are 32 teams in the league. The league is a professional league, which means that the players are paid to play and that it is their job. A league is a competition between a number of teams.