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8. UG embryology
BrownMed
20
Archaeology
6th Grade
11/02/2010

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Term
what bisects the cloaca
Definition
urorectal septum
Term
remember splanchnic LPM, somatic LPM, neural crest, paraxial mesoderm, mesenchyme, endoderm, and nephrogenic intermediate mesoderm and genital portion of urogenital ridge locations
Definition
Term
UG sinus becomes
Definition
bladder and urethra
Term
ureteric bud forms
Definition
ureters, renal pelvis, major and minor calyces, and collecting ducts
Term
paramesonephric duct forms /other name
Definition
fimbrae, fallopian tube, uterus and proximal vagina /mullerian duct
Term
pronephros
Definition
leaves the pronephric duct
Term
mesonephric duct forms / other name
Definition
epididymis, vas deferens, seminal vesicles, ejaculatory ducts /wolffian duct
Term
metanephros forms
Definition
nephrons, tubules and all other (urine) excretory structures
Term
in between pro and metanephros is
Definition
mesonephros: functional for a bit in a fetus
Term
development of para, mes duct and ureteric bud
Definition
U and M are branches of one duct leading to the bladder, with P over them. (PMU order from top down). bladder growth incorporates M into bladder wall.
Term
male dev. para, mes and U.B.
Definition
P degenerates, M comes down over U, looping over it (and ultimately inferior and posterior to U and bladder)
Term
female dev. para, mes and u.b.
Definition
M degenerates. P forms uterus and vagina which descend posterior to U and bladder
Term
t/f if 2 distinct uteri form, 2 distinct vaginae will form
Definition
f - only one DISTAL vagina ever
Term
which septal uterine conditions are dangerous
Definition
only if an egg implants on a thin simple septum
Term
urethral fold
Definition
= cloacal fold = genital fold, extends up to genital tubercle
Term
genital swelling
Definition
=labioscrotal swelling = lateral to genital fold
Term
differentiation / homologous structures
Definition
glans penis + scrotal swelling vs. glans clitoris + labial swelling. fused genital folds = labium minus, scrotum = labium majus
Term
corpus spongiosum / muscle
Definition
bulb of the penis or vestibule / bulbospongiosus
Term
corpus cavernosum / muscle
Definition
crura and shaft of clitoris or penis. ischiocavernosus overlies it.
Term
genital ridge
Definition
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