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Urinary System

Urinary System. KIDNEY. Renal capsule. Outer layer of kidney. Renal cortex. Superficial reddish area. Renal medulla. Deep darker area containing the pyramids and columns. Renal column. Area between the pyramids. Renal pyramid. 2. 3. 1. 4. 5. 6. 7. Minor calyx.

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Urinary System

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  1. Urinary System

  2. KIDNEY

  3. Renal capsule Outer layer of kidney

  4. Renal cortex Superficial reddish area

  5. Renal medulla Deep darker area containing the pyramids and columns

  6. Renal column Area between the pyramids

  7. Renal pyramid 2 3 1 4 5 6 7

  8. Minor calyx Each kidney contains 8-18

  9. Major calyx Each kidney contains 2-3

  10. Renal pelvis

  11. Renal hilum

  12. Ureter

  13. Bladder

  14. trigone Contains the 2 ureteral openings

  15. Detrusor muscle

  16. Transitional epithelium

  17. Urethra

  18. Prostatic urethra Portion of the urethra that passes through the prostate

  19. Membranous urethra Intermediate and shortest section of the male urethra

  20. Penile urethra Portion of the urethra that passes through the penis

  21. Internal urethral sphincter

  22. External urethral sphincter

  23. RENAL BLOOD SUPPLY

  24. Renal artery

  25. Segmental artery Renal artery divides and each segmental artery supplies one renal region

  26. Interlobar artery Blood vessels that pass through the columns between the pyramids

  27. Arcuate artery Blood vessels that form an arc between the cortex and the medulla

  28. Interlobular artery Branch from arcuate arteries to enter the cortex

  29. Afferent arteriole Branches from interlobular arteries and is where blood enters glomerulus

  30. Glomerulus

  31. Efferent arteriole Blood exits glomerulus

  32. Peritubular capillaries efferent arterioles divide to surround portions of the nephron in the cortex

  33. Vasa recta Some efferent arterioles have long loop-shaped capillaries that surround portions of the nephron in the medulla

  34. Interlobular vein Peritubular capillaries reunite to form interlobular veins Interlobular veins also receive blood from the vasa recta

  35. Arcuate vein Receives blood from the interlobular veins

  36. Interlobar vein Pass through the renal columns and receives blood from arcuate veins

  37. Segmental vein Receives blood from the interlobar veins

  38. Renal vein

  39. Nephron Contains one renal corpuscle and its renal tubule

  40. Renal corpuscle • Lies in the cortex and contains • Glomerulus • Bowman’s Capsule

  41. Glomerulus

  42. Glomerular (Bowman’s) capsule Double walled epithelial cup that surrounds the glomerulus

  43. Visceral layer of Bowman’s capsule Nucleus of podocyte

  44. (orange twisted) Proximal convoluted tubule (PCT) Portion of renal tubule that lies in the cortex and is attached to the glomerulus and coiled

  45. Loop of Henle Also called a nephron loop Extends into the medulla, makes a hairpin turn, and returns to the cortex

  46. (orange straight) Descending limb Portion of the nephron loop that descends from the PCT into the medulla

  47. (purple straight) Ascending limb Portion of the nephron loop that ascends from medulla and returns to the cortex, attaching to the DCT

  48. (purple twisted) Distal convoluted tubule (DCT) Portion of renal tubule that lies in the cortex and is attached to the collecting duct and coiled

  49. Collecting tubule (duct) Several DCTs drain into one collecting duct

  50. Juxtaglomerular apparatus (JGA) Ascending limb of loop of Henle Afferent arteriole Regulates arterial blood pressure and the rate of blood filtration by the kidneys

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