Urinary II

Question 1

Of a ureter, why is epi thick and muco folded

Answer 1

epic- so no absorption

folded= expand

Question 2

explain layers of ureter

Answer 2

fribous outer
longitunial/circular muscle fibres
connective tiss
transition epi

Question 3

describe transitional epithelium

Answer 3

o 5 layers
o Superficial layer thinner= umbrella cells = tight junction= prevent absor
o Tight junction= need to expand (plump/columnar vs squamous)

Question 4

muscle in bladder called and nerve supply

Answer 4

• Detrusor= smooth, under autonomic

o Para supply = pelvic splangic nerve

Question 5

why males have internal sphyincter

Answer 5

o Male = internal to prevent back track of semen

Question 6

nerve control of external sphincter

Answer 6

somatically controlled

Question 7

epithelium of utethra

Answer 7

strat squamous

o Frequent use

Question 8

PCT vs DCT

Answer 8

DCT absence of microvilli, large more defined lumen, more nuclei per cross-section & paler cytoplasm

Question 9

• PCT, TAL, DCT commonalities

Answer 9

all have extensive basolateral interdigitations & plentiful mitochondria for active transport of Na

Question 10

where is microvilli present

Answer 10

PCT, & pars recta (TDL).

Question 11

where is columnar epic

Answer 11

collecting duct