MaleUrinarySystemThe Male Urinary System is primarily responsible for the waste and elimination of urine.

This system is a complex system that involves feedback and direction from other body systems and organs.

Humans produce around 1.5 liters of urine in a 24-hour period.

Urine is a byproduct of kidney function and helps the body eliminate waste.

 

There are several functions of the Urinary System

1.)  Removal of Waste Products from the body

  • Primarily Urea and Uric Acid

2.)  Maintain Electrolyte Balance

  • Regulation of Sodium, Calcium, Potassium, and others

3.)  Acid-Base Regulation through balance and Homeostasis

4.)  Controlling the volume of blood.

5.)  Maintaining Blood pressure through Volume

 

Anatomical Aspects of This System Include:

 

Kidney

  • The kidney concentrates the urine by regulating electrolytes and removes the urea from the blood and other wastes.
  • Urea is an organic compound that was discovered in 1773.
  • This compound is soluble in water and is essentially a waste product.
  • Production of urea occurs in the liver and is the result of the breakdown of some amino acids.

 

Bladder

  • The bladder is an organ that is hallow.
  • It is layered similar to a balloon with several muscles that make up this organ.
  • The muscle is a Smooth Muscle
  • This allows the bladder to enlarge when it becomes full and small when empty.
  • Overall the bladder can hold 400-620 ml but the maximum is twice this amount if outflow is obstructed.
  • Males: The bladder lies between the rectum and the pubic symphysis.
  • It is just above the prostate.

 

Urethra

  • This is the endpoint of the urinary system.
  • Urine and other wastes start from kidney and then to the bladder prior to passing through the urethra and then out though the tip of the penis.
  • This tube connects the bladder to the outside of the body.
  • Control of excretion of urine is through the urethral sphincter
  • Male: The urethra also has a role in sexual reproduction because the function of the urethra is a passageway for semen

 

Urine Formation

  • Average Urine production is 1-2 Liters per day
  • This can change depending on medical conditions, water intake, activity level, weight, health, environment factors, and more.
  • Filtration of the blood pulls out some waste and some fluid.
  • Filtration happens in the kidneys – specifically in the nephrons.
  • GFR or Glomerular Filtration Rate is the amount of Filtrate produced every minute.
  • Kidney problems or failure can decrease this rate.
  • Chemicals, hormones, and Body Systems help regulate the Urine Formation in very complicated manners.
  • Urine is stored in the Bladder.
  • Urination is often a voluntary control – you choose to urinate.
  • Involuntary Reflex can happen with some meditations, medical conditions, and Neurological injury.

 

3 Definitions of Abnormal Urine Production

Polyuria – Excessive production of Urine

Oliguria –  Very low output of Urine

Anuria – Unable to pass urine  (or very little)

 

 

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