Urinary Bladder

Real World Example

Imagine trying to carry groceries in a flimsy plastic bag that stretches and holds everything until you find a place to put them down. This situation is similar to how the urinary bladder functions in your body. Just like the plastic bag, the bladder is a muscular sac that expands to store urine safely until it's convenient to release it, preventing any "spillage" until you reach a restroom, much like the bag holds your groceries until you get home.