Human Anatomy and Histology · MU Plovdiv

60. Excretory structures of the kidneys – minor and major calyces, pelvis. The ureter and urinary bladder. Position, description. Peritoneal relations. Structure of the wall. Blood and nerve supply.

Inside: 19 sections · 11 labelled pictures · 20 flashcards · 10 min

Topic 60 of 138 in the MU Plovdiv syllabus for Human Anatomy and Histology (Dental Medicine, Year 1). The free AceMed note covers it in 18 sections, about 1,278 words (10 min of reading), with 20 flashcards.

In this note

  1. RENAL PELVIS
  2. Shapes:
  3. Structure:
  4. URETER
  5. Constrictions
  6. Parts:
  7. Courses:
  8. Supply + Innervation:
  9. Histology:
  10. URINARY BLADDER
  11. Position:
  12. External structures:
  13. Internal Structure:
  14. Syntopy:
  15. Vascular supply:
  16. Innervation:
  17. Fixation :-
  18. Muscles:

RENAL PELVIS

  • The renal pelvis is a funnel - shaped structure, that collects urine from the kidney and direct it into the uretres
  • Location: is situated in the renal sinus ( the central cavity of kidney )

Shapes:

  1. a. Dendritic type
  • Extensive branching.
  • Very fine major calyces
  • narrow renal pelvis.
  1. b. Transitinal form.
  2. c. Ampullary type
  • Unclear major calyces
  • Wide renal pelvis
  • minor calyces arise directly from the renal pelvis.

Structure:

  • The renal pelvis is subdevided into cup-shaped structures know as calices (sg. calyx)
  • Each kidney has several minor calices that converge to form two or three major calices.

Renal papillae —Urine→ Minor calyces ⇉ Major calyces → Renal pelvis

URETER

  • There are 2 ureters, they are muscular tubes conveying the urine from the kidneys to the urinary bladder.
  • Dimensions:
  • 25-30cm long, 3cm diameter (having constrictions in certain sites).

retroperitoneal

Constrictions

↙ very important for the exam!

  • 5 Junction with the renal pelvis
  • 6 Crossing the iliac vessels
  • the right ureter runs ventrally to the external iliac artery and vein
  • the left ureter runs ventrally to the common iliac artery and vein
  • 7 Intramural part in the wall of the urinary bladder

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