Polar bears are excellent swimmers and they will travel long distances between shore and the sea ice if necessary. However, if a storm kicks up during these increasingly long swims (caused by the warming ocean) they can drown. These long swims and storms are also often difficult for cubs.
A urethral stricture is an abnormal narrowing of the urethra that slows or blocks the stream of urine exiting the body.The urethra is part of your urinary system, which is also known as the urinary tract. urethral stricture is an abnormal narrowing of the urethra that slows or blocks the stream of urine exiting the body.
Depending on the location of the stricture in the urethra, a closed tube (stent) can be passed through an endoscope to the area of the stricture. Once it reaches the proper location, then the stent can be opened to form a patent tube or conduit for urine to flow.