Medullary ray (anatomy)
From Wikipedia, the free encyclopedia
Medullary ray | |
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System | Urinary system |
In anatomy, the medullary ray (Ferrein's pyramid) is the middle part of the cortical lobule or renal lobule, consisting of a group of straight tubes to the collecting ducts.
Their name is potentially misleading -- the "medullary" refers to their destination, not their location. They travel perpendicular to the capsule and extend from the cortex to the medulla.
Additional Images
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Medullary rays
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Medullary rays
References
This article incorporates text from a public domain edition of Gray's Anatomy.
External links
- medullary+ray at eMedicine Dictionary
- BU Histology Learning System: 16003loa - "Urinary System: kidney, H&E, cortex and medullary ray"
- BU Histology Learning System: 15901loa - "Urinary System: neonatal kidney"
- UIUC Histology Subject 1008
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