( A ) Each kidney of an adult human measures 10-12 cm in length, 5-7 cm in width, 2-3 cm in thickness
( B ) Kidneys are reddish brown, bean shaped structures
( C ) Kidneys are situated between the levels of last thoracic and fourth lumbar vertebra close to the dorsal inner wall of the abdominal cavity.
( D ) Each kidney weighs about 120-170 g.
