Hindgut

Question 1

what does the endoderm of the hangout form?

Answer 1

the lining of the urethra and bladder

Question 2

what happens in week 7?

Answer 2

the cloacal membrane ruptures = opening for the hindgut

Question 3

how does the caudal end of the hindgut close after the cloacal membrane ruptures?

Answer 3

the ectoderm of the anal canal proliferates

Question 4

what occurs at week 9?

Answer 4

the anal canal re opens

Question 5

what is the process of the opening and closing of the anal canal?

Answer 5

in week 7 the cloacal membrane ruptures
the ectoderm of the anal canal proliferates which closes the canal
in week 9 the anal canal reopens

Question 6

the hindgut is endoderm derived, however what part is ectoderm derived?

Answer 6

the caudal end of the anal canal

Question 7

what abnormalities can occur from development of the hindgut?

Answer 7

incomplete separation of the hingut from the urogenital sinus by the urorectal septum

Question 8

what can occur as a result of incomplete separation of the urogenital sinus and the hindgut (urorectal septum) ?

Answer 8

urorectal fistula
rectovaginal fistula
rectoanal fistula
imperforate anus