Urinary System

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Urinary System
2011-07-19 10:37:03
Intro AP

Mini course 8
Show Answers:

  1. The glomerulus is a special
    capillary associated with the bowmans capsule
  2. the renal medulla is composed
    mostly of collection tubules and loops of Henle
  3. The female erethra is
    shorter than a males
  4. The proximal convoluted tuble is closer to
    bowmans capsle then the distal convoluted tubule
  5. Urine formation involves
    filtration of the plasma followed by selective reabsobption of substances along the rest of the nephron
  6. Order of Kindey
    • Renal capsule
    • cortex
    • medulla (Pyramids)
    • papilla
    • calyx
    • renal pelvis
    • ureter
    • bladder
    • urethra
  7. order of nephron
    • afferent renal artery
    • glomerulus
    • bowmans capsule
    • proximal conviuted tubule
    • loop of henle
    • distal conviuted tubule
    • collecting ducts
    • calyx
    • renal pelvis
    • ureter
    • bladder
    • urethra
  8. The location of the kidney
    • retroperitoneal
    • between the peritoneum and muscles of the back. covered in fat for protection
  9. function of system
    to filter the plasma of the blood to make urine
  10. ureters
    connect the kidney to the bladder
  11. bladder
    • where urine is temporaily stored. 600ml
    • transtional epithelium
    • smooth muscles and sphinctors
    • in the pelvic cavity, rugae (folds)
  12. urethra
    empties urine from the bladder out the body
  13. how many nephrons are in a kidney?
    a million for one kidney
  14. glomeruls
    • capillary ball
    • filtrates
  15. bowmans capsule
    • surrounds the glomerulus, filtration
    • beginning of the nephron, large amound to warter moved through osmosis
  16. proximal convoluted loop
    • major reabsorbtion of nutrients
    • water moves out by osmosis
    • part of the renal pyramids
  17. loop of henle
    • reabsorbtion of water
    • part of renal pyramids
  18. distal convoluted tubule
    • secretion of Hydrogen ions and reabsobtion of sodium
    • part of the renal pryamids
  19. collectind tubules
    • not apart of the nephron
    • merge to eventually form larger tubes that enter the calyx
    • first sight of urine
  20. capillariers
    merge to form the renal vein
  21. The efferent arteriole comes ___ the glomerulus and the afferent arteriole goes ___.
    into, out
  22. The proximal convoluted tubule is connected
    to bowmans capsule
  23. bowmans capsule almost completely envelopes the
  24. Many nephrons connect to
    each collection tubule
  25. The loop of Henle extends
    down into the renal medulla
  26. The three parts of urine formation
    • filtration
    • reabsorbtion
    • secretion
  27. filtration
    glomerular filtrate. Filters out the blood cells, plasma, protiens.
  28. reabsorbtion
    • as tubular fluid passes through nutrients such as glucose, sodium, and amino acids
    • prevents valuble material from being urinated off
  29. secretion
    • adding materials to the filtrate from the blood
    • like hydrogen ions, histamine, penicillin
  30. Hormonal influence
    • ADH: antidiuretic hormone
    • Aldosterone
  31. ADH
    release by the pituitary gland when body is dehydrated
  32. aldosterone
    hormone released by the adrenal gland in order to conserve sodium
  33. Urination involves
    relaxation of the urethral sphinctor muscle at the base of the bladder and smooth muscle in blader contracted forcing the urine out
  34. normal pH of blood?
    7.3 slightly basic
  35. Acidic
    • lower then 7
    • more hydrogen ions then hydroxide ions
  36. basic
    • higher than 7
    • more hydroxide ions than hydroxide ions
  37. sodium bicarbinate
    a good buffer: helps stabalize the pH levels in the blood
  38. most of the water filtered out from the glomerulus is reabsorbed in the
    proximal convolution
  39. all of the capillars that surround the nephron tubule are important aids in
  40. the collection tubule leads to the
    renal papilla
  41. another word for urination is
  42. tissue of the bladder
    • mucosa(lines lumen)
    • -transitional epithelium
    • muscularis
    • -smooth muscle, involuntary
  43. internal urethra sphinctor
    • involuntary
    • smooth muscle
    • controlled by the ANS
  44. external urethra sphinctor
    • voluntary, skeletal,
    • controlled by the Somatic Nervous System