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.
Soccer Field Dimensions (Imperial units) 1  The field of play must be rectangular and marked with lines. These lines belong to the areas of which they are boundaries. 2  The centre mark is indicated at the midpoint of the halfway line. A circle with a radius of 9.15 m (10 yds) is marked around it.