Morphological Studies Of The Stomach Of Malayan Pangolin, Manis javanica

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CHAIRUN NISA'. Morphological Studies of the Stomach of Malayan

Pangolin, M$nb fivaniia, under the supervision of KOESWINARNING SIGIT,
JUNZO YAMADA and SRIHADI AGUNGPRTYONO.


The morpholcgy of the stomach of Malayan pangolin, Mank@mn/;cawas

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by

maawmpic,

scanning

electron

microscopic,

histological,

IfYrtochemiGl and immunohistochernical methods. The stomach was of a cashew


4red-bean

shape with short I-r

curvature. Instead of the simple columnar

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qithelium, almost the entire luminal stomach was lined by keratinized stratified
s&amous epithelium, except the pyloric gland region. Asymmetrical sphincterP

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I&shape was detected in lhe esophagml junction. The gasbic gland consisted
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4-. mucous, oxyntic, and pyloric glands. Mucous glands were clustered in three
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of the stomach: tbe median of the 1r-

curvature, around h e duct

c&fice of the oxyntic gland, and the pyioric a n t r ~ mregiofis. The mucous glands
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lobulated and each lobe had a duct orifice. The glands consisted of mucous

$x cells which were rather cuboidal in shape with an oval or spherical basally

nudeus and endocrine cells. Oxyntic glands gathered to form a big
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glandular mass located in the median greater curvature. The gland consisted of

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mucous surface epithelium, mucous neck cells, parietal cells, chief cells and
endmine cells. The gland drained into the stomach lumen through a single

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common duct positioned centrally at the pyloric site. Pyloric gland was located in

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the most distal portion of the stomach, near the junction of duodenum. The

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gland consisted of mumus type cells and endouine cells resembled those of
cous glands. Unlike the other two glands, the pyloric gland was lined by

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umnar epithelium, as those of common mammals. A big murosal fold named

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ma shape' covered by numerous hard spines of pyloric teeth, was found in

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lesser curvature of the antnrm pyloric region. This structure was supported
considerable thickened of muscle layers and contained of small pebbles,

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icating that it might sewe as a triturating fundon, similar to the avian's
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By alcian blue-periodic acid Schiff (AB-PAS) staining, acid rnucopoly&rides were detected onty in duct orifice of mucous glands and n d c or pits