A) 1.2 million
B) 2.4 million
C) 3.6 million
D) 4.8 million
E) 5.6 million

A) The kidneys are retroperitoneal.
B) The ureters connect the kidneys to the urinary bladder.
C) The urethra of males is longer than the urethra of females.
D) The kidneys are at equal heights within the pelvic cavity.
E) The right kidney is located more inferiorly than the left kidney.

A) The urinary system
B) The cardiovascular system
C) The integumentary system
D) The digestive system
E) The respiratory system