Histology Guide virtual histology laboratory

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Histology Guide

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 of pressure, volume and pH of blood.

Kidney

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

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MH 143 Kidney

(monkey)

Nephron

The nephron is made up of a renal corpuscle and a single long tubule that has several parts (proximal tubule, Henle's loop and distal tubule).

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MH 141a Kidney

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MH 141b Kidney

Connective Tissue

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MH 142 Kidney

Fetal Kidney

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MH 140 Kidney Fetal

Ureter

The ureter is a fibromuscular tube through which the urine passes from the kidney to the bladder.

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MH 146 Ureter

(longitudinal and cross sections)

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MHS 215 Ureter

(longitudinal and cross sections)

Bladder

The urinary bladder is a muscular sac that stores urine, allowing urination to be infrequent and voluntary.

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MH 147 Bladder

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MH 018 Transitional Epithelia

(relaxed and stretched bladder)