The prostate is a small gland located just below the bladder. The gland is only found in men. It is shaped like a doughnut and surrounds the urethra, the tube through which urine flows. The prostate reaches its adult size by the age of 20 and weighs a little less than one ounce.
Zonal marking Zonal marking is a defensive strategy where defenders cover an area of the pitch rather than marking a specific opponent. If an opponent moves into the area a defender is covering, the defender marks the opponent.
Center circle: A circular marking with a 10-yard radius in the center of the field from which kickoffs are taken to start or restart the game. Center pass: A pass from a player located near the sideline towards the middle of the field; used to get the ball closer to the front of the goal. Center spot: A small circular mark inside the center circle that denotes the center of the field from which kickoffs are taken to start or restart the game.