- Micturition is also called urination. It is defined as expelling of urine stored in urinary bladder through urethra.
- Kidney filters urine and ureter transport urine into urinary bladder
- When bladder get full, its muscle and sphincter relax and urination occurs
- Governed by nervous and muscular system
It can be explained in two phase:
I. Filling
- Filling of urine into bladder through ureter
- No sphincter in ureter, enter bladder obliquely.
II. Voiding
- Expelling of urine stored in bladder.
- Sphincter and muscle of urethra contract? Relax so that voiding occurs.