Publication: Duodenal microanatomy of the domestic cat. (Felis catus)
Authors
Robert, Henry W. ; Al-Bagdadi, F.K.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Duodenal samples were taken from similar
locations in six cats, processed, stained, and examined via
light microscope. There were no prominent circular folds
(plicae circulares) or stratum compactum (lamina
subglandularis). The 1072 pm X 201 pm villi were covered
by 46 pm high columnar epitheliocytes proximally which
decreased in height (41 pm) distally and displayed a 1.1 -
1.7 pm striated border. Globular leukocytes, mononuclear
cells, and twenty-eight goblet cells (exocrinocytus
calciformis) per villus were seen. The intestinal gland (crypt
of Lieberkuhn) epithelium was 20 pm tall and had a less
distinct striated border. The 515 pm simple straight tubular
intestinal gland layer displayed distal branching. Many
mitotic figures, 12 goblet cells per gland, and occasional
columnar to triangular cells with red cytoplasmic granules
were seen. The thickness of the lamina propria mucosa
(glandular portion) decreased from proximal to distal
(563-465 pm). The lamina muscularis mucosa had two
layers and decreased in thickness distally (71-28 pm). The
proximal muscularis mucosa was penetrated by the ducts
of submucosal (Brunner's, duodenal) glands. The tela
submucosa decreased in thickness distally (593-192 pm) and
contained submucosal glands with 11.5 - 75 pm lumina for
the first 1.5 - 2.5 cm. However, submucosal glands could
be found to a distance of 8 cm. The glandular epithelium
ranged from 7.5 - 22.5 pm in height. Only one type of
secretory cell was observed, with both mucous and serous
properties. The tunica muscularis ranged from 190-1425 pm
(median thickness of 557 pm) and had two layers.
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