Medullary ray | |
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Details | |
System | Urinary system |
Identifiers | |
TA | A08.1.01.018 |
FMA | 76499 |
Anatomical terminology
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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 connected 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.
Medullary rays
Medullary rays
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)