Urinary System is one of the complex systems inside your body, where waste products are eliminated through urine. The way in which the human body works is often very amazing. Here you can read about how different parts of the urinary system work in unison to prevent accumulation of waste materials inside the body.
Parts of Urinary Tract
Your urinary system consists of four parts. The first part consists of two bean-shaped kidneys, which are located on both sides of your upper abdomen just below the ribs. The second part is the two ureters, which are tube-like structures running down from the inner sides of the kidneys. They carry urine to the bladder. The urinary bladder is a heart shaped organ located in the lower abdomen. This is the place where the urine is stored just before voiding. The last part of the urinary tract is the urethra, through which the urine is voided.
How the System Works
The most complex part of the process takes place in the kidneys, and is called glomerular filtration. This is where the blood is filtered to remove impurities. The renal artery carries blood to the kidneys. Inside your kidneys, there are thousands of tiny nephrons, which contain glomerulus. The actual filtration is done by the glomeruli. When the blood passes through the glomeruli, all the waste materials are filtered out, and the filtered blood is sent back to the circulation system through the renal vein. The waste material, now known as urine, flows to the urinary bladder via the ureters.
The wall of the urinary bladder consists of detrusor muscles, which can contract and distend. The bladder wall also contains parts of the nervous system. Whenever your bladder is full, the nerve endings get activated, and a message is sent to your brain. The brain, in turn sends a message to the sphincter located at the lower end of the bladder, which opens to void the urine via the urethra.
Urinary System Examination
Most urinary tract problems can be found by simple examination of the urine. Doctors also conduct urine tests for many other diseases than urinary tract problems, including diabetes, jaundice and other metabolic disorders.
The way you urinate can also indicate the presence of any infection, or other diseases. For instance, any pain or discomfort while urinating may indicate infection in the urinary tract. In men, an increase in the frequency of urination or intermittent flow of urine may be the first sign of prostate problems.