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Renal pyramids
Image:Kidney PioM.png
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
Image:Gray1127.png
Vertical section of kidney.
Latin	pyramides renales
Gray's	subject #253 1221
Dorlands/Elsevier	p_03/13479070

Renal pyramids (or malpighian pyramids) are cone-shaped tissues of the kidney. The renal medulla is made up of 8 to 18 of these conical subdivisions. 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.

[edit] Additional images

Frontal section through the kidney

[edit] External links

• SUNY Figs 40:03-02

Urinary system - Kidney - edit
Renal capsule | Renal cortex | Renal medulla (Renal sinus, Renal pyramids) | Renal calyx | Renal pelvis
Nephron - Renal corpuscle (Glomerulus, Bowman's capsule) → Proximal tubule → Loop of Henle → Distal convoluted tubule → Collecting ducts Juxtaglomerular apparatus (Macula densa, Juxtaglomerular cells, Extraglomerular mesangial cells) Renal circulation - Renal artery → Interlobar arteries → Arcuate arteries → Cortical radial arteries → Afferent arterioles → Glomerulus → Efferent arterioles → Vasa recta → Arcuate vein→ Renal vein
Renal physiology
Filtration - Ultrafiltration | Countercurrent exchange Hormones effecting filtration - Antidiuretic hormone (ADH) | Aldosterone | Atrial natriuretic peptide Endocrine - Renin | Erythropoietin (EPO) | Calcitriol (Active vitamin D) | Prostaglandins
Assessing Renal function / Measures of dialysis
Glomerular filtration rate | Creatinine clearance | Renal clearance ratio | Urea reduction ratio | Kt/V | Standardized Kt/V | Hemodialysis product