Embryology Flashcards
What are the 3 parts of the mesoderm?
Para-axial mesoderm
Intermediate
Lateral plate mesoderm
What do para-axial mesoderm form?
Somites > Vertebrae
What part of the mesoderm forms the urogenital system?
Intermediate plate mesoderm
What do the lateral plate mesoderm form?
Body cavities & coverings
What gastrulation layer composes the gut?
Endoderm
What is the allantois an out pouching of?
Endoderm
What is the terminal area of the hind gut called?
Cloaca
What does the cloaca divid into?
Rectum
Urogenital sinus
What does the urogenital sinus form?
Urinary bladder
Urethra
How many sets of kidneys develop during embryological development?
3
What is a remnant of the allantois?
Median umbilical ligament
What is the name of the primary kidney formed in the embryo?
Mesonephros
What is the name of the secondary kidney formed in the embryo? Where does it form?
Pronephros
Neck
Where does the pronephos duct drain into?
Cloaca
What parts of the kidney degenerates during embryological development?
Mesonephros Pronephros (except pronephric duct)
What was the mesonephric duct originally?
Pronephric duct
What develops off the metanephros?
Ureteric bud
Metanephric mesoderm
What does the metanephros form?
Ureters
Kidney
What happens to the mesonephros later in development?
Form the ovaries or testes
What forms the renal pelvis?
Ureteric bud
What forms the nephron?
Metanephric mesoderm
What forms from the ureteric bud?
Collecting duct
Calyx
Pelvis
Ureter
Where do the kidneys start in embryological development?
Either side of bladder
Where do the kidneys lie in the abdomen?
T12-L3
What stops the ascent of the kidneys?
Adrenal glands
What is the abnormality called when 2 ureters are present?
Duplicated ureter
What is it called when the kidneys do not separate in embryological development?
Horseshoe kidney
