urinary bladder

Examples of urinary bladder in the following topics:

• Urinary Bladder Cancer

  • Bladder cancer refers to any type of malignancy arising from the epithelium of the urinary bladder.
  • The urinary bladder is the organ that collects urine excreted by the kidneys before disposal by urination.
  • Bladders occur throughout much of the animal kingdom, but are very diverse in form and, in some cases, are not homologous with the urinary bladder in humans.
  • In infants and young children, the urinary bladder is in the abdomen, even when empty.
  • Bladder cancer is any of several types of malignancy arising from the epithelial lining (i.e., the urothelium) of the urinary bladder.

• Urinary Bladder

  • The urinary bladder is a hollow, muscular, and distendible or elastic organ that sits on the pelvic floor.
  • The urinary bladder is a urine storage organ that is a part of the urinary tract.
  • The urinary bladder usually holds 300–350 ml of urine.
  • The urinary bladder is composed of several layers of tissue that facilitate urine storage and expulsion.
  • The associated structures of the urinary and male reproductive tract are labelled.

• Cystoscopy

  • Cytoscopy is an endoscopy of the urinary bladder via the urethra.
  • Cystoscopy is an endoscopy of the urinary bladder via the urethra.
  • The urethra is the tube that carries urine from the bladder to the outside of the body.
  • These lenses let the physician focus on the inner surfaces of the urinary tract.
  • Many cystoscopes have extra tubes to guide other instruments for surgical procedures to treat urinary problems.

• Micturition and the Micturition Reflex

  • Micturition is the ejection of urine from the urinary bladder through the urethra to the outside of the body.
  • Micturition, also known as urination, is the ejection of urine from the urinary bladder through the urethra to the outside of the body.
  • The storage phase: A relaxed bladder in which urine slowly fills the bladder.
  • At low bladder volumes, the afferent firing of the stretch receptors is low, and results in relaxation of the bladder.
  • At high bladder volumes, the afferent firing of the stretch receptors increases, and causes a conscious sensation of urinary urge. 

• Urethra

  • The urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids from the body.
  • The urethral sphincter  separates the bladder from the urethra.
  • As the urethra is shorter in females relative to males, they are more vulnerable to bacterial urinary tract infections.
  • Semen does not flow through the bladder or the rest of the urinary tract, instead it is a fluid made of sperm cells and other fluids that passes through a few different glands from the testes to the urethra through the vas deferens.
  • Describe the location and function of the urethra as part of the urinary system

• Development of the Urinary System

  • The urinary system develops from the intermediate mesoderm during prenatal development.
  • The nephrogenic ridge is the part of the urogenital ridge that forms the urinary system.
  • The urinary bladder develops from the upper end of the urogenital sinus, which is continuous with the allantois.
  • The lower ends of the metanephric ducts are incorporated into the wall of the urogenital sinus and form the trigone of the bladder.
  • The connective tissue and smooth muscle surrounding the bladder are derived from adjacent splanchnic mesoderm.

• Aging and the Urinary System

  • The kidneys are part of the urinary system, which also includes the ureters and the bladder.
  • The bladder wall changes with age.
  • Aging also increases the risk for urinary disorders such as acute and chronic kidney failure, urinary incontinence, leakage, or retention, bladder, and other urinary tract infections.
  • Urinary system cancers are associated with advanced age and are more common in the elderly, especially prostate cancer (men) and bladder cancer.
  • Summarize the changes that may occur in the urinary system with aging

• Overview of Urine Transport, Storage, and Elimination

  • The organs, tubes, muscles, and nerves that work together to create, store, and carry urine are referred to as the urinary system, which is another name for the renal system.
  • Urine transport follows a path through the kidneys, ureters, bladder, and urethra, which are collectively known as the urinary tract.
  • If the urinary system is healthy, the bladder can hold up to 16 ounces (2 cups) of urine comfortably for 2 to 5 hours.
  • When you urinate, the brain signals the bladder muscles to tighten, squeezing urine out of the bladder.
  • The transport and removal of urine from the body follows the urinary tract.

• Levator Ani Injury and Urinary Stress Incontinence

  • Urinary incontinence (UI) is any involuntary leakage of urine.
  • Caffeine or cola beverages also stimulate the bladder.
  • Urethral pressure normally exceeds bladder pressure, resulting in urine remaining in the bladder.
  • Urologists specialize in the urinary tract, and some urologists further specialize in the female urinary tract.
  • Bladder symptoms affect women of all ages.

• Urinary Incontinence

  • Urinary incontinence (UI) is any involuntary leakage of urine.
  • The most common causes of urinary incontinence in women are stress urinary incontinence and urge urinary incontinence.
  • Women with both problems have mixed urinary incontinence.
  • Disorders like multiple sclerosis, spina bifida, Parkinson's disease, strokes, and spinal cord injury can all interfere with nerve function of the bladder.
  • Polyuria generally causes urinary urgency and frequency, but doesn't necessarily lead to incontinence.