In anatomy, the medullary ray 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 are located only in the renal cortex, and not in the renal medulla.^[1]

[edit] References

[edit] External links

• medullary+ray at eMedicine Dictionary
• Histology at BU 16003loa - "Urinary System: kidney, H&E, cortex and medullary ray"
• Histology at BU 15901loa - "Urinary System: neonatal kidney"
• UIUC Histology Subject 1008

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