Urinary AgEdNet powerpoint Flashcards
Function of the Kidneys
eliminate the byproducts of metabolism through the urine
Kidney location
- dorsal part of the abdomen
- on each side of the spine
- behind the peritoneum
Peritoneum
the thin sheet of connective tissue that lines the abdominal cavity
Structure of the Kidney
- reddish-brown
- bean shaped
- smooth
- contains renal artery and vein and ureter
Ureter structure
- tubular structure
- walls of contractions
Ureter function
Carries urine from the kidney to the bladder
- series of contraction push urine from kidney to bladder
Peristalsis
Series of contractions push urine from kidney to bladder
Bladder Structure
- hollow organ
- lined by epithelium
- wall contains smooth muslce that contract to empty urine
- can stretch to hold more urine
Urethra function
carries urine to the outside of the body
Urethra structure
- has muscular wall that helps control the flow of urine
- femal urethra shorter and more prone to bladder infection
- male urethra longer and more prone to obstruction from bladder stones
Primary function of renal system
- To excrete nitrogen-containing wastes
- When proteins and amino acids are broken down – ammonia is formed (very toxic)
- Liver converts ammonia to urea (less toxic)
How are stones formed?
- Nucleotides are broken down to uric acid.
- Excess uric acid can crystallize and form bladder stones.
Stones treatment
- A special diet can limit amounts of uric acid.
- Medication can also help.
How to kidneys regulate water balance
- Kidneys can conserve water when needed:
- Limited water available to drink
- Disease (vomiting or diarrhea)
What is renal failure?
Kidneys fail to remove waste
- Electrolyte, pH and water regulation are not balanced
- Kidneys can no longer function normally
What are symptoms of renal failure?
Weight loss
Poor appetite
Drinking more water
More urination
Lethargic
Vomiting/diarrhea
What can be done for renal failure?
Old age – not much
Increase fluids
Restrict protein and phosphorus in diet
Kidney transplant expensive and not
commonly done