KIDNEYS – These organs are always in action. They filter your blood and produce urine, which is then excreted by your body. You have two kidneys, one on each side of your abdomen, directly behind your rib cage. Each kidney is around the size of a fist. The kidneys are protected by a tough fibrous capsule (irregular dense connective tissue). They have relatively little connective tissue between the nephrons otherwise.

URETER – Each ureter is a tiny tube that runs from the renal pelvis to the urinary bladder, measuring about 25 cm in length. Underneath the epithelium, there is a thick, fibroelastic lamina propria.

URETHRA – The urine from your bladder is carried out of your body through this tube. It ends in the penis (in men) or in front of the vaginal opening to the outside of your body (in women). The female urethra is coated with stratified columnar epithelium and a few tiny mucosal glands that release mucus, and it is attached to the vaginal anterior wall by an external layer of fibrous connective tissue.

References: Urinary System. (n.d.). https://My.Clevelandclinic.Org/. Retrieved May 5, 2022, from https://my.clevelandclinic.org/health/articles/21197-urinary-system#:~:text=The%20urinary%20system%20includes%20the,urinary%20tract%20infections%20(UTIs).
Urinary System. (n.d.-b). https://Www.Histology.Leeds.Ac.Uk/. Retrieved May 5, 2022, from https://www.histology.leeds.ac.uk/urinary/urethra.php