Anatomy Bones and Muscles · MU Pleven

71. Renal pelvis. Ureter. Urinary bladder.

Covers the renal pelvis, its three shape types and calyx structure, then the ureter's course, constrictions, parts, relations, arterial and nerve supply, wall histology and peristalsis. Goes on to the urinary bladder's position, external and internal structure, syntopy, blood and nerve supply, ligaments and muscles, and finishes with the male and female urethra, including a table of male urethral parts and the sphincters.

Inside: 25 sections · 15 labelled pictures · 1 table · 10 flashcards · 12 min

Topic 70 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 23 sections, about 1,570 words (12 min of reading), with 10 flashcards.

In this note

  1. RENAL PELVIS
  2. Shapes:
  3. Structure:
  4. URETER
  5. Constrictions ← very important for the exam!
  6. Parts:
  7. Courses:
  8. Supply + Innervation:
  9. Histology:
  10. URINARY BLADDER Subperitoneal
  11. Position:
  12. External structures:
  13. Internal Structure: muscles encircle and control the opening and closing the passageways.
  14. Syntopy:
  15. Vascular supply:
  16. Innervation:
  17. Fixation:- smooth muscles:
  18. Muscles:
  19. URETHRA
  20. Male urethra:
  21. Histology :
  22. Female urethra:
  23. Urethra sphincter

RENAL PELVIS

  • The renal pelvis is a funnel-shaped structure, that collects urine from the kidney and direct it into the ureters
  • 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. Transitional form.
  2. c. Ampullary type
  • Unclear major calyces
  • Wide renal pelvis
  • minor calyces arise directly from the renal pelvis.

Structure:

  • The renal pelvis is subdivided into cup-shaped structures know as calices (sg. calyx)
  • Each kidney has several minor ca' 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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