WORKSHOP IN HISTOLOGY, CYTOLOGY AND EMBRYOLOGY - 2016
Chapter 5. SPECIAL HISTOLOGY
Urinary organs
Slide 121. Urinary bladder.
Staining: hematoxylin and eosin.
Magnification: x80.
A vertical section of the Urinary Bladder wall reveals the same tunics as those found in the Ureter wall, although in the bladder they are thicker and less distinctly demarcated. In a contracted bladder, the mucosa forms deep folds and is lined with transitional epithelium (1) (see slide 32). Beneath the epithelium lies a thick lamina propria (2), which transitions without a sharp boundary into the loose Connective Tissue of the submucosa (3).
The muscular coat consists of three layers of smooth myocytes: an inner longitudinal layer (4), a middle circular layer (5), and an outer longitudinal layer (6).
The outer coat is represented by loose connective tissue (adventitia) or covered by mesothelium (7) in the region of the serosa.
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Slide 121. Urinary bladder.
Last update: 07/08/2026
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