Histology Guide virtual histology laboratory

250 Virtual
Microscope Slides


200 Micrographs

Chapter 16 - Urinary System

The urinary system (also known as the renal system) consists of the kidneys, ureters, bladder and the urethra. Its functions in the formation of urine and regulation pressure, volume and blood pH.


The kidney filters blood, removes waste materials and concentrates the filtrate (urine) for elimination. Each kidney contains millions of functional units called nephrons.


A nephron is composed of a renal corpuscle and a single, long tubule.

EM 232 Kidney

EM 080 Bowman's Capsule

EM 225 Kidney Glomerulus

EM 195 Podocyte

EM 234 Kidney

EM 235 Kidney

EM 233 Kidney

EM 193 Kidney

Renal Tubules

The renal tubules of a nephron consist of a proximal convulated tubule, loop of Henle, and distal convulated tubule.

EM 197 Renal Tubule

Renal Vasculature

Despite their relatively small size, the kidneys receive almost 20% of the cardiac output.

EM 228 Kidney

EM 192 Kidney


The urinary bladder is a hollow muscular organ that collects and stores urine from the kidneys.

EM 237 Bladder

EM 238 Bladder


EM 239 Bladder