Urinary System I & II Flashcards Preview

Histology Post Midterm > Urinary System I & II > Flashcards

Flashcards in Urinary System I & II Deck (79)
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61

what is the role of the collecting tubules in the medulla?

primary role in producing a concentrated urine (est. a gradient due to the transport fo urea form the tubular fluid into the renal interstitum)

62

what are the two types of cells found int he cortical collecting tubules?

Light cells - principle
dark cells - intercalated

63

what is the set up of medullary collecting tubules?

similar to cortical collecting tubules
dark cells present in outer medulla
dark cells absent in inner medulla
principle cells increase in height - only cell lining the collecting tubule in inner medulla!

64

how are the papillary collecting tubules (duct of Bellini) formed?

converging collecting tubules

65

what type of epithelium does the papillary collecting tubules (duct of Bellini) have?

simple columnar
only principal cells

66

where does the papillary collecting tubules (duct of Bellini) empty?

area cribosa on the apex on renal papilla!

67

what are the two cells types of renal interstitial?

fibroblasts
mononuclear cells
have cells that decrease BP

68

what is found in upper 2/3 of ureter?

inner longitudinal
outer circular

69

what is found in lower 1/3 of ureter?

additional outer longitudinal later

70

what is scalloped in relaxed state?

urinary bladder lumen

71

what are the muscularis layers in the urinary bladder?

inner longitudinal
middle circular
outer longitudinal

72

what type of epithelium lines the prostatic portion of the male urethra?

transitional

73

what type of epithelium lines the remaining poritions of the male urethra?

pseudostratified or stratifed columnar epithelium

74

where are mucus secreting glands (of Littre) found in males and females?

beneath BM - subepithelial CT

75

what makes the thin limb of the loop of Henle different form a capillary?

"lollipop with wrapper" - cytoplasm around lumenal surface = not in capillaries

76

what does the extraglomerular mesangial cell do?

messenger between macula dense/distal tubule and juxtaglomerular cell
sits between macula densa and blood vessel

77

if you see macula dense, where are you?

vascular pole

78

where is angiotensinogen produced?

liver

79

what is the only cell that shows artifical borders between cells?

collecting tubules of Bellini