Renal System Histology and Models

Types of kidney stones

Adrenal gland Kidney Renal artery Ureter Urinary bladder Spleen

Adrenal gland Kidney Ureter Urinary bladder Prostate gland Urethra

Trigone Prostate gland Urethra

Adrenal gland Kidney Ureter Urinary bladder Prostate gland Urethra

Kidney Regions The kidney is divided into three REGIONS. If the question asks you to name the REGION, the answer is one of the below: –CORTEX –MEDULLA –RENAL PELVIS

Cortex Medulla Renal Pelvis REGIONS

Cortex Medulla Renal Pelvis REGIONS

Kidney Structures If the question asks you to name the STRUCTURE, it is one of the below: Within the cortex, you will find the glomeruli and the proximal and distal convoluted tubules. Within the medulla you will find the loops of Henle, collecting ducts, the pyramids and the columns (pale area between the pyramids). Within the renal pelvis you will find the hilus, the major calyxes, which branch into the minor calyxes.

Cortex: Glomerulus Proximal and Distal convoluted tubules Medulla: Loops of Henle Collecting duct Pyramids Columns Renal pelvis Hilus Major calyxes Minor calyxes

Cortex: Glomerulus Proximal and Distal convoluted tubules Medulla: Loops of Henle Collecting duct Pyramids Columns Renal pelvis Hilus Major calyxes Minor calyxes

Renal Cortex Renal Medulla Renal pelvis Adrenal Cortex Adrenal Medulla

Pyramids Hilus Ureter Major calyx Minor calyx

Pyramids Hilus Ureter Calyx

Pyramids Hilus Kidney stones Ureter

Renal artery Segmental artery Interlobar artery Interlobular artery Arcuate artery

Renal artery Interlobular artery Interlobar artery Arcuate artery Segmental artery

KIDNEY MODEL Glomerulus Proximal convoluted tubule Descending loop of the nephron –Thick segment –Thin segment Ascending loop of the nephron –Thick segment –Thin segment Distal convoluted tubule Collecting duct Vasa recta

Glomerulus Vasa recta

Distal convoluted tubule Proximal convoluted tubule Glomerulus Descending loop of the Nephron Ascending loop of the nephron Collecting duct

Thick segment of the ascending loop of the nephron Thick segment of the descending loop of the nephron Thin segment of the ascending loop of the nephron Thin segment of the descending loop of the nephron Study Tip: To get oriented, always start at the glomerulus and run your finger down the proximal convoluted tubule. When it loops back up and thickens, you are now at the distal convoluted tubule.

Efferent arteriole Afferent arteriole Glomerular (Bowman’s) capsule Macula densa Proximal convoluted tubule GLOMERULUS

vasa recta peritubular capillaries

vasa recta peritubular capillaries

KIDNEY SLIDES Glomerulus –(simple squamous epithelium) Convoluted tubules –(simple cuboidal epithelium)

Glomerulus Tubule Skip

Glomerulus Convoluted Tubule

Kidney Glomerulus