副腎に於ける微細血管分布の研究
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概要
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The distribution of minute blood-vessels in cat's adrenal gland has been examined by Ogawa's method of pigment infusion into blood-vessels. Altogether 26 cats were used in the experiments. Following are the results obtained : 1) The minute blood-vessels in the internal medulla and external cortex are drained by different circulatory systems : after being drained by the arterioles branching from the arterial network in the capsule, some of the minute blood-vessels in the cortex empty into the venules at its base and, after piercing through the cortex, end in the venous network in the capsule, but majority of them connect with the minute venous network in the medulla and end in the central vein there. Those in the medulla are drained in like manner by the arterioles branching from the arterial network in the capsule and end in the central vein in the medulla.2) The capillaries in the cortex; which consist of extremely fine vessels, encircle each cellular layer forming a network that has different shapes of meshes: in zona glomerulosa they are dice-shaped, in zona fasciculata rectangular and in zona reticularis irregular polygonal. 3) The specific features observed in the cortex are: a) the transudation of injected mixtures of Chinese ink and Ringer's solution from the capillaries in zona glomerulosa depends upon the change in the ability of vessel walls to let pass fluid, and b) pronounced contraction of the capillaries is seen in zone fasciculata. 4) It was observed that, in several parts of the medulla which seemed to consist of groups of chromophile cells or ganglionic cells, a capillary network consisted of sinusoid blood-vessels forming diceshaped or rectangular meshes.
- 千葉大学の論文
- 1954-05-28