Medullary ray (anatomy)
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.[1] 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.[1]
| Medullary ray | |
|---|---|
| Details | |
| System | Urinary system |
| Identifiers | |
| Latin | radii medullares |
| TA98 | A08.1.01.018 |
| TA2 | 3378 |
| FMA | 74299 |
| Anatomical terminology | |
Additional Images
Medullary rays
Medullary rays
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
- Bigongiari LR, Patel SK, Appelman H, Thornbury JR (December 1975). "Medullary rays. Visualization during excretory urography". The American Journal of Roentgenology, Radium Therapy, and Nuclear Medicine. 125 (4): 795–803. doi:10.2214/ajr.125.4.795. PMID 1211509.
External links
- Histology image: 16003loa – Histology Learning System at Boston University — "Urinary System: kidney, H&E, cortex and medullary ray"
- Histology image: 15901loa – Histology Learning System at Boston University — "Urinary System: neonatal kidney"
- UIUC Histology Subject 1008
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