RENCULAR MORPHOLOGY AND RENAL VASCULAR SYSTEM OF THE HARBOR PORPOISE PHOCOENA-PHOCOENA (L)
RENCULAR MORPHOLOGY AND RENAL VASCULAR SYSTEM OF THE HARBOR PORPOISE PHOCOENA-PHOCOENA (L)
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DOI：
10.1139/z79-107
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发表时间：
1979-01-01
影响因子：
1.4
通讯作者：
SMITH, GJD
中科院分区：
文献类型：
--
作者：
HEDGES, NA;GASKIN, DE;SMITH, GJD
本文研究了35只来自北大西洋西部的港湾鼠海豚的肾脏。肾脏较大（占体重的0.84%），多肾（每个肾脏约有300个肾）。肾丘有发育良好的髓乳头（肾厚度的71-80%），这与产生浓缩尿的能力密切相关。髓质内的血管系统也存在分区，这是哺乳动物产生浓缩尿的另一个特征。肾内血管供应是典型的哺乳动物和类似于其他鲸类动物。由于出色的注射技术，发现血管系统的复杂性和变异性比以前报道的要大。血管的控制进行了讨论，潜水心动过缓。副交感神经可以刺激血管舒张，在潜水结束时迅速恢复肾循环。
The kidneys of 35 harbor porpoises, P. phocoena, from the western North Atlantic were studied. Kidneys are large (0.84% of body wt) and multirenculate (approximately 300 renculi per kidney). Renculi have well developed medullary papillae (71-80% of rencular thickness) which correlates well with an ability to produce concentrated urine. Zonation of the vascular system within the medulla is also present, another characteristic of mammals producing concentrated urine. The intrarencular vascular supply is typically mammalian and similar to other cetaceans. As a result of excellent injection techniques, greater complexity and variability in the vascular system was found than has been previously reported. Vascular control is discussed in relation to diving bradycardia. Parasympathetic nerves may stimulate vasodilation to quickly restore rencular circulation at the end of a dive.