Abdomen 2 Flashcards
the pancreas develops from (2)
ventral and dorsal pancreatic buds
which pancreatic bud develops first and has the greatest affect on production of the panc
dorsal bud
The ventral pancreatic duct develops near the entry of
bile duct to the duodenum
the ventral bud forms the
uncinate and the head
dorsal bud forms the
body and tail
when the dorsal and ventral bud fuses what happens
the duct system fuses as well to form the main pancreatic duct of Wirsung.
development of the ____ and ____ systems are closely related
urinary and genital
kidneys begin to form from the ______ during week ____
mesoderm
week 3
pronephros are
rudimentary non functioning
the mesonephros are
well developed and functions breifly
the metanephros
become the permanent kidneys
what happens to the pronephros during week 4
degenerates rapidly, leaving a duct to be used by the next kidney
formations of the mesonephros during week 4
forms caudad to pronephros
- provides partial function while permanent kidneys continue to develop
by the end of the embryonic period, the mesonephros → the mesonephric ducts/ Wolffian ducts (male genital structures), disappear in
females
the metanephros appear as
uretic buds
distal end of the metanephros forms (3)
distal end forms the pelvis, calyces, collecting tubules
proximal end of the metanephros forms
ureters
nephrons form from the
mesoderm around the buds
when do the kidney stop ascending
when they come in contact with the adrenals
two parts of the adrenals
medulla and cortex
medulla developed from
neural crest cells (sympathetic)
Adrenal medullary pathology may appear along the
sympathetic neurons at the celiac axis
Cortex of the adrenals developed from
gonadal mesoderm
Ectopic adrenalcortical tissue found
along the gonadal migration path
Because each part of adrenals develops from different embryonic tissues
two different anatomical and functional structures within one endocrine gland
