Single-Layered Pseudostratified Columnar (Cylindrical) Epithelium-Renal Papilla

Cross-section through the kidney papilla at the height of the ductus papillares 1 . The ducts are lined with single-layered Pseudostratified epithelium  ( cylindrical epithelium, columnar epithelium ). The epithelial nuclei (light re d) are locate d in the basal portion of the cell. The cytoplasm contains few organelles and shows only faint staining. The cell borders are a prominent detail. Between the ductus papillares are blood-filled capillaries 2 . The connective tissue components in this renal papilla preparation are stained blue.

The diameter for collecting tubes in the ductus papillares is about 20 μm.

1 Ductus papillaris

2 Capillaries

Stain: azan; magnification: × 200

References

Kuehnel, W.(2003). Color Atlas of Cytology, Histology, and Microscopic Anatomy. 4^th edition . Institute of Anatomy Universitätzu Luebeck Luebeck, Germany . Thieme Stuttgar t · New York .