What Is The Function Of Urinary Bladder – The bladder is a hollow muscular organ located in the pelvis, behind and above the pubic bone. The bladder has two main functions: to store and empty urine.

The bladder maintains the ability to urinate by delaying and controlling the flow of urine, so that the average person urinates 4 to 8 times a day with a typical bladder capacity of 400 to 500 mL (approximately) in the average adult.

What Is The Function Of Urinary Bladder

What Is The Function Of Urinary Bladder

Urine is produced in the kidneys and travels down two tubes called the bladder.

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The bladder is a flexible organ and can expand greatly to accommodate 600 to 800 ml of urine.

The central nervous system controls the bladder. The nerve centers that control urination are located in the spinal cord, brain stem, and cerebral cortex.

The bladder wall consists of the detrusor muscle, which is a smooth muscle, and several layers of epithelial mucosa.

During urination, the detrusor muscle contracts and the urethral sphincters (valves) relax to allow urine to flow.

Urinary Bladder This Hollow Muscular Organ Has Two Main Functions: Low Pressure (storage) Of Urine Expulsion Of Urine At Appropriate Time (voiding) Functional.

It exits the bladder into the urethra, which carries urine out of the body. The female urethra is quite short (3-5 cm), while the male urethra is longer (15-20 cm) and divided into 3 segments (prostatic urethra, membranous urethra and penile urethra).

The bladder is controlled by the central nervous system. Smooth muscles are controlled by two different divisions of the autonomic nervous system. Parasympathetic inputs stimulate contraction of the detrusor muscle. Sympathetic inputs stimulate contraction of the internal urethral sphincter. Somatic efferent neurons stimulate contraction of the skeletal muscle, the external urethral sphincter.

As the bladder expands during bladder filling, its walls stretch. It is sensed by bladder afferent neurons whose sensory dendrites are located in the bladder wall. The bladder projects afferents to the spinal cord and to various regions of the brain responsible for coordinating efferent output to the bladder and urethra.

What Is The Function Of Urinary Bladder

There are two modes of operation for the bladder, which are listed in the table above: either retention or release. During bladder filling, when the bladder is retained, parasympathetic input to the detrusor muscle is inhibited and sympathetic and somatic efferent pathways are activated, causing contraction of the two urethral sphincters. Afferent information from the bladder provides the sensation of bladder filling and the urge to urinate. At the appropriate time and place for urination, parasympathetic efferents are activated, causing contraction of the detrusor muscle. At the same time, there is a coordinated inhibition of sympathetic efferents and somatic efferents to relax the internal and external urethral sphincters. For normal urination to occur, all parts of the body in the urinary tract need to work together and properly.

Medical Terminology For The Urinary System

Kidneys. Two pods, each about the size of a fist. They are located on each side of your spine, just below your rib cage. Each day, your kidneys filter about 120-150 liters of blood to remove waste and balance fluids. This process produces about 1-2 liters of urine per day.

Urinary tracts. Thin muscular tubes that connect your kidneys to your bladder and carry urine to the bladder.

Bladder. The hollow, muscular, balloon-shaped organ expands as it fills with urine. The bladder sits in your pelvis between your hip bones. The normal bladder functions as a water reservoir. It can hold 1.5-2 cups of urine. Although you can’t control how your kidneys work, you can control when you empty your bladder. Emptying the bladder is known as urination.

Urethra. A tube located at the base of the bladder that allows urine to leave the body during urination.

Receptors, Channels, And Signalling In The Urothelial Sensory System In The Bladder

View full size image. All parts of the urinary tract—kidneys, ureters, bladder, and urethra—must work together to pass urine normally.

The urinary tract includes two sets of muscles that work together as a sphincter, closing the urethra to keep urine in the bladder when you go to the toilet.

In order to urinate, your brain signals the sphincters to relax. It then signals the muscle wall of the bladder to contract, forcing urine through the urethra and out of your bladder.

What Is The Function Of Urinary Bladder

How often you urinate depends on how quickly your kidneys make the urine that fills your bladder and how much urine your bladder can comfortably hold. As the bladder fills with urine, the muscles in your bladder wall relax and the sphincter muscles contract to keep the urine in the bladder. As your bladder fills, signals to your brain tell you to find the toilet soon.

Pdf] Expression , Regulation And Function In The Urinary Bladder ! !

The urinary tract is important because it filters waste and extra fluids from the bloodstream and removes them from the body.

The amount of urine you produce depends on many factors, such as the amount of fluid and food you consume, the amount of fluid you lose through sweating and breathing. Certain medications, medical conditions, and types of food can also affect the amount of urine you produce. Children urinate less than adults.

Drink enough fluids, especially water. If you’re healthy, try to drink six to eight glasses of fluids each day. If you have kidney stones or bladder stones, you may need to drink more. At least half of the liquid you drink should be water. If you have certain conditions, such as kidney failure or heart disease, you may need to drink less water. Ask your health care professional how much fluid is good for you.

Keep your bowels regular. Regular bowel movements are important for bladder health. By doing so, you can improve both bowel and bladder health

Ureter: Anatomy, Functions, Constrictions & Disorders

Go whenever you need to. Often people hold their urine because it is not a good time to go to the toilet. However, holding urine for too long can weaken the bladder muscles and make it difficult to empty the bladder completely. Urine left in the bladder can allow bacteria to grow and increase the likelihood of developing a urinary tract infection (UTI).

Develop healthy bathroom habits. Take enough time to empty your bladder completely – don’t rush. Urinate after sex to remove any bacteria that may have entered the urethra during sex. Clean the genitals before and after sex. If you are a woman, wipe from front to back to prevent bacteria from entering the urethra, especially after a bowel movement.

Be in tune with your body. Pay attention to how often you urinate. Pay attention if you feel like you have to urinate more often than usual, leak urine, find it hard to start urinating, or can’t empty your bladder completely. These changes can be early signs of various urinary tract problems. If you notice any of these symptoms, talk to your doctor. If you get help early, you can prevent the condition from getting worse.

What Is The Function Of Urinary Bladder

Do exercises for the pelvic floor muscles. Pelvic floor exercises, also called Kegel exercises, can keep your pelvic floor muscles strong and maintain healthy bladder and bowel function. Both men and women can benefit from pelvic floor muscle exercises.

Neurotrophins As Regulators Of Urinary Bladder Function

By including lean proteins, whole grains, fiber-rich breads, nuts, fruits, and vegetables in your meal plan, you can keep your urinary tract healthy by encouraging regular bowel movements.

It conducts and supports clinical trials in many diseases and conditions, including urological diseases. Trials seek to find new ways to prevent, detect, or treat disease and improve quality of life.

Director Dr. Watch a video by Griffin P. Rodgers explaining the importance of participating in clinical trials.

This content is provided as a service of the National Institute of Diabetes and Digestive and Kidney Diseases, part of the National Institutes of Health. translates and disseminates research findings to increase knowledge and understanding of health and disease among patients, health professionals and the public. The content it produces is carefully reviewed by scholars and other experts.

Ureter: Definition & Function

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