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In anatomy, a medullary ray (Ferrein's pyramid) is the middle part of a cortical lobule (or renal lobule). Each consists of a group of nephrons in the renal cortex. Their name is potentially misleading, as "medullary" refers to their destination, not their location. They travel perpendicular to the capsule, and extend from the cortex to the medulla. They may be visualised during urography.

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  • الشُعاعٌ اللُبِّيّ في الأهرام الكلوية، هو الجزء الأوسط من الفصيص القشري وهو عبارة عن مجموعة من الأنابيب المستقيمة متصلة بـنظام القنوات الجامعة. (ar)
  • In anatomy, a medullary ray (Ferrein's pyramid) is the middle part of a cortical lobule (or renal lobule). Each consists of a group of nephrons in the renal cortex. Their name is potentially misleading, as "medullary" refers to their destination, not their location. They travel perpendicular to the capsule, and extend from the cortex to the medulla. They may be visualised during urography. (en)
  • In anatomia, la piramide di Ferrein è il nome con cui vengono indicate le sezioni separate dai raggi midollari che dipartono dal vertice della piramide del Malpighi e si addentrano nella zona paracorticale del rene. È chiamata così in onore dell'anatomista francese Antoine Ferrein. Comprende le parti terminali dei tubuli collettori e sezioni dei vasi terminali. Non ha di per sé valore prognostico anatomo-patologico rilevante, per cui non viene prelevata nelle biopsie renali. La zona più corticale è quella più soggetta a necrosi in caso di ischemia. (it)
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  • radii medullares
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  • radii medullares (en)
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  • Medullary ray (en)
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  • الشُعاعٌ اللُبِّيّ في الأهرام الكلوية، هو الجزء الأوسط من الفصيص القشري وهو عبارة عن مجموعة من الأنابيب المستقيمة متصلة بـنظام القنوات الجامعة. (ar)
  • In anatomy, a medullary ray (Ferrein's pyramid) is the middle part of a cortical lobule (or renal lobule). Each consists of a group of nephrons in the renal cortex. Their name is potentially misleading, as "medullary" refers to their destination, not their location. They travel perpendicular to the capsule, and extend from the cortex to the medulla. They may be visualised during urography. (en)
  • In anatomia, la piramide di Ferrein è il nome con cui vengono indicate le sezioni separate dai raggi midollari che dipartono dal vertice della piramide del Malpighi e si addentrano nella zona paracorticale del rene. È chiamata così in onore dell'anatomista francese Antoine Ferrein. Comprende le parti terminali dei tubuli collettori e sezioni dei vasi terminali. Non ha di per sé valore prognostico anatomo-patologico rilevante, per cui non viene prelevata nelle biopsie renali. La zona più corticale è quella più soggetta a necrosi in caso di ischemia. (it)
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  • شعاع لبي (ar)
  • Piramide di Ferrein (it)
  • Medullary ray (anatomy) (en)
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  • Medullary ray (en)
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