Microscopic Anatomy Of The Kidney: Understanding Renal Pyramids And Lobules

Microscopic Anatomy Of The Kidney: Understanding Renal Pyramids And Lobules

Histology of Kidney
Answer:

Histology of kidney External structure:

• It is a bean shaped structure
• Its convex margin is placed laterally while concave margin is placed medially forming hilum
• Hilum leads into renal sinus
• Renal sinus is occupied by the upper expanded part of the ureter called renal pelvis
• Renal pelvis divides into
  1. Major calyces
  2. Minor calyces
     • Each major calyx divides into it
  3. Papilla
     • It is a projection of kidney tissue

Histology of kidney Internal structure:

• Kidney consists of
  1. Inner part called medulla
     • It consists of triangular areas called renal pyramid
     • Base of it is directed towards cortex & apex towards renal pelvis
  2. Outer part called cortex
     • It consists of
       1. Cortical arches/lobules
          • It is the tissue lying between the base of the pyramid & surface of the kidney
       2. Renal columns
          • It is the tissue lying between adjacent pyramids

Histology of kidney Lobe of kidney:

• Pyramid & the cortex around it constitute lobe