Final answer:
The mucosa of the ureter is indeed distensible and impermeable to urine, which is true. It features transitional epithelium that allows stretching without urine permeation.
Step-by-step explanation:
The statement that the mucosa of the ureter is distensible and impermeable to urine is True. The ureter's mucosa is lined with a specialized type of epithelium known as transitional epithelium, which is capable of stretching and distending as needed. This allows the ureter to accommodate the varying amounts of urine that pass through it without the urine permeating into the surrounding tissue. The transitional epithelium does not produce mucus which contributes to its impermeability. To assist urine transport, the ureters also have layers of smooth muscles that generate peristaltic waves, propelling urine from the kidneys to the urinary bladder, independent of gravity.
The statement that the mucosa of the ureter is distensible and impermeable to urine is false. The inner mucosa of the ureter is lined with transitional epithelium, which allows it to stretch and expand as the urine flows through. This transitional epithelium is not impermeable to urine, as it is capable of both reabsorbing and secreting substances from the urine. Additionally, the muscular layer of the ureter generates peristaltic contractions to move the urine towards the bladder, independent of gravity.