Urinary System

functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat,Functions of the Urinary System

  • Excretion – nitrogenous, drugs and toxins
  • Maintaining blood volume and concentration
    • balance of water and dissolved salts
  • pH regulation
  • Blood pressure maintenance
    • Renin
  • Erythrocyte concentration
    • Erythropoietin
  • Vitamin D effects

functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia,Coverings of the Kidney

PARARENAL FAT

GEROTA’S FASCIA*

PERIRENAL FAT

*Derived from transversalis fascia

  • Hilum – passage area for ureters, vessels, nerves
  • Surrounding layers
    • renal capsule – innermost, barrier
    • Perirenal fat – middle portion, most important because it holds the kidney in position.
    • renal fascia – outer portion

functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia, hilus, renal cortex, renal medulla, renal pelvis,

  • 10cm long, 5cm wide and 2.5cm thick.
  • Hilus- medial side.
  • Bean shaped appearance.

Three regions of the kidney

  • Renal cortex
  • Renal medulla
  • Renal pelvis
functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia, hilus, renal cortex, renal medulla, renal pelvis,
functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia, hilus, renal cortex, renal medulla, renal pelvis, glomeruli tubules, nephron
functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia, hilus, renal cortex, renal medulla, renal pelvis, glomeruli tubules, nephron, ureter, uretero pelvic junction, pelvic brim, ureterolithiasis

URETER

  • 10 inches
  • 3 anatomical constrictions:*

  URETERO-PELVIC JUNCTION

  PELVIC BRIM

  URETERO-VESICAL JUNCTION

  • NERVE SUPPLY:  L1-L2 spinal nerves

* Common site of ureteral stones (ureterolithiasis)

functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia, hilus, renal cortex, renal medulla, renal pelvis, glomeruli tubules, nephron, ureter, uretero pelvic junction, pelvic brim, ureterolithiasis

functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia, hilus, renal cortex, renal medulla, renal pelvis, glomeruli tubules, nephron, ureter, uretero pelvic junction, pelvic brim, ureterolithiasis, male urethra, prostatic, membranous, penile ,fossa terminalis

MALE URETHRA

  • prostatic – widest and most dilatable
  •  membranous – within the urogenital diaphragm

  – shortest and least dilatable due to the presence of the sorrounding sphincter urethra

  • penile – traverses the bulb of penis and the corpus spongiosum to end at the external urethral meatus

  – longest

  – dilates to form the fossa terminalis within the glans penis

functions of the urinary system, excertion, ph regulation, renin, erythropoietin, vitamin d effects. pararenal fat, hilum, renal capsule, renal fascia, hilus, renal cortex, renal medulla, renal pelvis, glomeruli tubules, nephron, ureter, uretero pelvic junction, pelvic brim, ureterolithiasis, female urethra, vgina

FEMALE URETHRA

  • Is a thin walled tube about 4cm long.
  • Embedded in the muscle of the front wall of the vagina.
  • Urethral opening.
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About Blue Star

Medical Student (Future MD)
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