A lot vs. Alot: 9 Grammatical Pitfalls
urinary system n.
The organs and passages of the urinary tract.
|urinary system |
The system of organs and tissues involved with regulation of water content and salt concentration in the body and with the excretion of metabolic wastes and excess water and salt in the form of urine. In mammals, the urinary system consists of the urinary tract and associated tissues.