Which structure plays an increasing role in urination as toddlers develop?

Question

Quizplus · Accepted Answer

As toddlers develop, they begin to gain control over their external urinary sphincter, which is a skeletal muscle located at the base of the urethra. This muscle helps to regulate the release of urine from the urinary bladder, and its increasing control is what allows toddlers to begin potty training and achieve continence. The other structures listed (ureter, urethra, urinary bladder) also play important roles in the urinary system, but do not undergo as significant changes during toddler development with regards to urination.

Which Structure Plays an Increasing Role in Urination as Toddlers