Differentiate between the following:
- Ureter and Urethra
- Renal papilla and Renal pelvis
It is not given in my book. Please help.
The ureters run from the kidneys to the bladder whilst the urethra runs from the bladder to exit the body:
The renal papillae are the site where urine drains into one of the minor calyxes of the kidney. Multiple minor calyxes join together into a major calyx, and multiple major calyxes join together to form the renal pelvis which then drains into the ureter.