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Embryology
SOM2014 Endocrine, urinary & reproductive embryology
26
Medical
Professional
03/13/2011

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Cards

Term
What is the function of the pineal gland?
Definition
Production of melatonin controlling circadiam rhythm
Term
pineal gland derives from what tissue?
Definition
Diencephalon (so do eyes)
Term
pituitary derives from which tissue?
Definition
Diencephalon
Term
The adenohypophysis derives from what tissue?
Definition
Rathke's pouch
Term
thyroid gland derives from what tissue?
Definition
Endoderm between Arch 1-3
Term
what causes cretinism?
Definition
lack of iodine to promote brain developement during development
Term
thymus and inferior parathyroid derive from what tissue?
Definition
endoderm from 3rd pouch
Term
superior parathyroids derives from what tissue?
Definition
4th pouch endoderm
Term
what transcription factor promotes acinar cell production from primitive gut?
Definition
PDX1
Term
what transcription factor converts pancreatic acinar cells to islet cells?
Definition
NGN3
Term
adrenal gland derives from what tissue?
Definition
Mesoderm (cortex)
neural crest cells (medulla)
Term
pancrease derives from what tissue?
Definition
endoderm
Term
what cells produce testosterone?
Definition
Leydig (stromal cells)
Term
what are the stromal cells of male and female reproductive organs?
Definition
Male = leydig (testosterone)
Female = Thecal (androgen & estrogen)

both involved in hormone production
Term
what are the epithelial cells derivatives of male and female reproductive organs?
Definition
male = sertoli cells
female = granulosa cells (estrogen and progesterone)
Term
What should "HEGS" remind you off?
Definition
Hormone production
Epithelia derived
Granulosa cells
Sertoli cells
Term
kidneys derive from what tissue?
Definition
Intermediate mesoderm
Term
what is the first stage of kidney development?
Definition
Pronephros formation
Term
What is the second stage of kidney development?
Definition
formation of Mesonephros
Term
What does the mesenophros become in males?
Definition
Wolffian duct
Term
what is the third stage of kideny development
Definition
formation of Metanephros
(Definitive kidney)
Term
what can cause unilateral loss of the male genital duct and defintive kidney?
Definition
disruption of mesonhphros formation
Term
When do the first glomeruli develope?
How many total?
Definition
first appear at 8 weeks
Add 1 generation every 2 weeks
12 Total
Term
what causes renal dysplasia?
Definition
Increased urinary pressure
can form cartilege
Term
where is horseshoe kidney formed?
Definition
bifurcation of iliac arteries (anterior rotation)
Term
Horseshoe kidey: which poles fuse?
rotation? vascular supply?
Definition
inferier poles with ventral (anterior) rotation, dual vascular supply from iliac arteries
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