Slide 11. Single-layered squamous epithelium of the kidney, H&E
Explains where simple squamous epithelium appears in the kidney: the parietal layer of Bowman's capsule and the thin limbs of the loop of Henle. Covers the H&E staining appearance, how to recognise the flat cells and bulging nuclei around the glomerulus in the cortex and the thin tubules in the medulla, and how to tell them apart from capillaries, which are also flat-lined but contain blood cells.
Inside: 1 section · 1 min
Topic 100 of 127 in the MU Sofia syllabus for Cytology (Dental Medicine, Year 1). The free AceMed note covers it in 1 section, about 104 words (1 min of reading).
In this note
Introduction
Introduction
The kidney shows simple squamous epithelium in two places: the outer (parietal) layer of Bowman's capsule, and the thin limbs of the loop of Henle.
Stain
H&E: nuclei blue-purple, cytoplasm pink.
How to recognise it
In the cortex, a glomerulus (a ball of capillaries) surrounded by the clear Bowman's space.
Around that space, a single layer of very flat cells whose thin nuclei bulge slightly.
In the medulla, thin tubules lined by flat cells, next to thicker tubules lined by cuboidal cells.
Don't confuse it with: capillaries, which are also lined by flat cells but contain blood cells.
Theory: topic 37 (simple surface epithelia).
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