52. Functional unit of the kidney; about one million in each kidney
53. Tube leading from the urinary bladder to the outside of the body
54. Triangular area in the urinary bladder
55. Blood vessel that carries blood away from the kidney
56. Depression or hollow in that part of an organ (such as the kidney) where blood vessels and
nerves enter and leave
Match the terms with their correct meanings.
57. Central collecting region in the kidney
58. Chemical element carrying an electrical charge when dissolved in water; sodium and
potassium are examples
59. Tube for injecting or removing fluids
60. Hormone secreted by the kidney to stimulate production of red blood cells by bone marrow
61. Inner region of an organ
62. Outer region of an organ
63. Tiny ball of capillaries in outer area of kidney
64. Urination; micturition
65. Nitrogenous waste product of muscle metabolism excreted in urine