Scanning electron microscopy of vascular architecture in the mucosa of sheep omasal laminae.
Three dimensional vascular architecture in the omasal laminae of sheep was studied by scanning electron microscopy of corrosion casts. The omasal laminae were equipped with well-developed subepithelial capillary network with various capillary loops and inter-papillar undulations. The capillary loops were more highly developed in the omasal papillae than in the inter-papillar space and more in the oral region than in the aboral. The capillary loops were inconspicuous in the inter-papillar space of the middle and aboral regions and in the omasal papillae of the aboral region. On the other hand, the inter-papillar undulation of the capillary network was more conspicuous in the aboral region than in the other regions of the omasal mucosa. These findings may indicate a regional diversity in the function of the omasal laminae.
Yamamoto
Y
Y
Department of Veterinary Anatomy, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan.
Kitamura
N
N
Yamada
J
J
Yamashita
T
T
D000818:Animals; D002196:Capillaries / Q000648:ultrastructure; D016319:Corrosion Casting / Q000662:veterinary; D005260:Female; D005753:Gastric Mucosa / Q000098:blood supply* / Q000648:ultrastructure; D008297:Male; D008855:Microscopy, Electron, Scanning; D009851:Omasum / Q000098:blood supply* / Q000648:ultrastructure; D012756:Sheep / Q000033:anatomy & histology*