Kidney
- renal papilla (4x
objective lens)
-
This image shows the
renal papilla (upper portion of the image), located
at the base of the medulla, and the lumen and wall of a minor
calyx (lower portion of the image), the funnel-shaped structure that
fits over the papilla. Within
the papilla are numerous large papillary ducts (ducts
of Bellini), lined by simple columnar epithelium. Urine
flows from the papillary ducts into the calyx
through the area cribrosa (not shown), formed
by the openings of the papillary ducts through the epithelium that covers
the papilla. The papilla is covered by stratified cuboidal epithelium, and
the calyx is lined by transitional epithelium,
resting on an underling layer of smooth muscle, ordinary connective tissue
and adipose connective tissue.
- Stain = H&E.
Copyright
Paul B. Bell, Jr. & Barbara Safiejko-Mroczka
The
University of Oklahoma
Version 010603