The ureters enter the bladder at an oblique angle, creating a one-way valve mechanism. This angle is known as:
Trigone
Ureteral orifice
Urethra
Ureteral hiatus
The ureters enter the bladder at an oblique angle, which helps create a one-way valve mechanism. This angle prevents the backflow of urine from the bladder into the ureters, ensuring that urine flows in one direction only, from the kidneys to the bladder. Hence, the correct answer is option 2