Excretory system

Components of the excretory system

• Kidneys,
• ureter (ureter),
• bladder (vesica urinaria),
• urethra (urethra).

Kidneys

The kidney is a paired organ whose function is the formation of primary urine and subsequent adjustment into definitive urine. By eliminating waste substances and metabolites, it serves to maintain Homeostasis and Acid-base balance. The endocrine function of the kidneys ensures the maintenance of water in the body and the regulation of blood pressure.

 For more information see Kidneys.

Kidney (histological specimen)

 For more information see Kidney (histological specimen).

Ureter

paired tubular organ, urinary transport through the ureter is not a passive process - it is ensured by contractions of the muscular layer of the ureter

 For more information see Ureter.

Bladder

 For more information see Bladder.

Urethra

 For more information see Urethra.

Filtration, resorption, secretion in the kidneys

• Filtration,
• resorption,
• secretion.

Physiology

Sodium (Na)

 For more information see Kidney sodium transport.

Urine and its concentration, dilution, excretion

 For more information see Renal blood flow and its self-regulation.

Acid - base balance

• Functioning of the kidneys in maintaining acid-base balance,
• biochemical mechanisms.

Physiology

Kidney function in maintaining acid-base balance

 For more information see Renal function in maintaining acid-base balance.