TY - JOUR
T1 - The Insulo-Acinar Portal and Insulo-Venous Drainage Systems in the Pancreas of the Mouse, Dog, Monkey and Certain Other Animals
T2 - A Scanning Electron Microscopic Study of Corrosion Casts
AU - Murakami, Takuro
AU - Fujita, Tsuneo
AU - Miyake, Tsuyoshi
AU - Ohtsuka, Aiji
AU - Taguchi, Takehito
AU - Kikuta, Akio
PY - 1993
Y1 - 1993
N2 - Scanning electron microscopy of vascular casts of the pancreas from monkies, cattle, pigs, dogs, cats, rabbits, guinea pigs and mice showed certain species differences in the occurrence of intralobular and interlobular islets and in the microcirculatory pattern of these islets. Interlobularly located islets were frequently found in the mouse and guinea pig, as has been previously established in the rat (Murakami and Fujita, 1992); they emitted insulo-venous efferent vessels directly draining into veins. in contrast, the intralobular islets in the guinea pig usually issued insulo-acinar portal vessels continuous with the lobular capillary network. in the mouse, they usually emitted both the insulo-acinar portal and insulo-venous efferent vessels. the insulo-venous efferent vessels, including those of the interlobular islets, could partly be portal in nature since they occasionally issued portal branches directed to the lobular capillary network. in rabbits, cats, dogs, pigs, cattle and monkies, as in men (Murakami et al., 1992), essentially all islets in the pancreas were intralobular in location and usually emitted the portal vessels only. in the mouse and rabbit, as in the rat (Murakami and Fujita, 1992), the islet received afferent vessels in its superficial aspect and issued efferent vessels from its deep aspect. in the Formosan monkey, as previously reported in the rhesus monkey (Fujita and Murakami, 1973), the afferent vessels ususlly ran deep into the islet which emitted vessels from its superficial aspect. in other animals examined in this study, as in humans (Murakami et al., 1992), no consistent rule concerning the microcirculatory pattern within the islet could be determined.
AB - Scanning electron microscopy of vascular casts of the pancreas from monkies, cattle, pigs, dogs, cats, rabbits, guinea pigs and mice showed certain species differences in the occurrence of intralobular and interlobular islets and in the microcirculatory pattern of these islets. Interlobularly located islets were frequently found in the mouse and guinea pig, as has been previously established in the rat (Murakami and Fujita, 1992); they emitted insulo-venous efferent vessels directly draining into veins. in contrast, the intralobular islets in the guinea pig usually issued insulo-acinar portal vessels continuous with the lobular capillary network. in the mouse, they usually emitted both the insulo-acinar portal and insulo-venous efferent vessels. the insulo-venous efferent vessels, including those of the interlobular islets, could partly be portal in nature since they occasionally issued portal branches directed to the lobular capillary network. in rabbits, cats, dogs, pigs, cattle and monkies, as in men (Murakami et al., 1992), essentially all islets in the pancreas were intralobular in location and usually emitted the portal vessels only. in the mouse and rabbit, as in the rat (Murakami and Fujita, 1992), the islet received afferent vessels in its superficial aspect and issued efferent vessels from its deep aspect. in the Formosan monkey, as previously reported in the rhesus monkey (Fujita and Murakami, 1973), the afferent vessels ususlly ran deep into the islet which emitted vessels from its superficial aspect. in other animals examined in this study, as in humans (Murakami et al., 1992), no consistent rule concerning the microcirculatory pattern within the islet could be determined.
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U2 - 10.1679/aohc.56.127
DO - 10.1679/aohc.56.127
M3 - Article
C2 - 8373657
AN - SCOPUS:0027296911
VL - 56
SP - 127
EP - 147
JO - Archives of Histology and Cytology
JF - Archives of Histology and Cytology
SN - 0914-9465
IS - 2
ER -