Final answer:
Ureters connect the kidneys and the urinary bladder, allowing urine to flow from the kidneys to the bladder. The walls of the ureters have smooth muscle that propels urine through peristalsis, and the bladder stores urine until it is eliminated through urination. The urethra then transports urine from the bladder to the outside environment, and urinalysis is performed to analyze urine for disease.
Step-by-step explanation:
Ureters are tube-like structures that connect the kidneys with the urinary bladder. Each ureter arises at the renal pelvis of a kidney and travels down through the abdomen to the urinary bladder. The walls of the ureter contain smooth muscle that can contract to push urine through the ureter by peristalsis. The walls are lined with transitional epithelium that can expand and stretch.
The urinary bladder is a hollow, muscular organ that stores urine from the kidneys before it is eliminated through urination. Filling of the bladder triggers the autonomic nervous system to stimulate the detrusor muscle in the bladder wall to contract, forcing urine out of the bladder and into the urethra. The urethra transports urine from the bladder to the outside environment. Urinalysis is the analysis of urine to diagnose disease.