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Renal pyramid

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Title: Renal pyramid  
Author: World Heritage Encyclopedia
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Subject: Kidney, Renal pelvis, Renal capsule, Renal artery, Renal vein, Renal circulation, Renal column, Hilum of kidney, Minor calyx, Major calyx
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Renal pyramid

Renal pyramids
1. Renal pyramid
2. Efferent artery
3. Renal artery
4. Renal vein
5. Renal hilum
6. Renal pelvis
7. Ureter
8. Minor calyx
9. Renal capsule
10. Inferior renal capsule
11. Superior renal capsule
12. Afferent vein
13. Nephron
14. Minor calyx
15. Major calyx
16. Renal papilla
17. Renal column
Vertical section of kidney.
Latin Pyramides renales
Gray's subject #253 1221
System Urinary system

Renal pyramids (or malpighian pyramids or Malpighi's pyramids named after Marcello Malpighi, a seventeenth-century anatomist) are cone-shaped tissues of the kidney. The renal medulla is made up of 27 to 30 of these conical subdivisions (usually 27 in humans). The broad base of each pyramid faces the renal cortex, and its apex, or papilla, points internally. The pyramids appear striped because they are formed by straight parallel segments of nephrons.

Additional images

The base of each pyramid originates at the corticomedullary border and the apex terminates in a papilla, which lies within a minor calyx, made of parallel bundles of urine collecting tubules.

See also

External links

  • 40:03-02


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