Module 1 - Lesson 6 Flashcards
what is the urogenital system?
the system that develops into the reproductive and urinary systems
- develops from the intermediate mesoderm of the embryo
- same in male and female for up to 7 weeks
when does the urogential system differentiate into male and female?
7 weeks
up to 7 weeks what do both sexes have in the urogenital system of the embryo?
- gonadal ridge
- urogenital sinus
- mesonephric ducts
- paramesonephric ducts
at 7 weeks the urogenital system…
differentiates and develops further
the primitive gonads become …
ovaries and testes
urogential sinus becomes…
females - bladder, urethra, lower vagina
males - bladder, urethra, prostate gland, bulbourethral gland
mesonephric ducts aka..
WOLFFIAN
paramesonephric ducts aka…
mullarian
mullarian ducts form into
female parts
wolffian ducts form into
male parts
wolffian ducts aka
mesonephric
mullarian ducts aka
paramesonephric
in both sexes the trigone is formed from the…
wolffian ducts
in males the wolffian ducts form
reproductive structures - initiated by AMH - produced by testes
in females the wolffian ducts…
regress
what is Gartners duct cyst?
remnant of the wolffian duct seen in the anterolateral wall of the vagina (superior portion)
there are 2________ they ________ to become what
2 mullerian ducts.
fuse
uterus, superior vagina, fallopian tubes
- fusion creates a septum and is eventually reabsorbed leaving a cavity
fusion of mullarian ducts creates a ______ and is eventually reabsorbed leaving a cavity
fusion creates a septum and is eventually reabsorbed leaving a cavity
what are created from the mullarian ducts
uterus
superior vagina
fallopian tubes
what DOES NOT develop from the mullarian ducts?
ovaries
what are ovaries developed from?
the gonadal ridge
the fusion of the mullarian ducts starts….
caudally and progresses cephalically
what is a congenital malformation?
A structure or functional defect present at birth (occurs during embryologic stages)
Uterus congenital malformations occur when…
- Arrested development
- Failure of fusion
- Failure of resorption
cornis
uterus horn
collis
cervix
congenital conditions will always be related to the
kidney and ureters
what are the two types of arrested development?
complete
partial
explain complete arrested development
Agenesis (no presence) of the uterus, upper portion of the vagina, Fallopian tubes
MRKH syndrome
explain partial arrested development
one duct doesn’t develop or only partially develops
2 senarios - uterus unicornuate or Rudimentary horn
what is uterus unicornuate?
- partial arrested development
- one horn develops, other not at all
what is rudimentary horn?
- partial arrested development
- one horn develops, other partially
associated renal anomalies are…
associated renal anomalies (horseshoe kidney, pelvic kidney, agenesis of the ipsilateral kidney)
what is failure of fusion? - 2 types
- looking for indentation of fundal cap
- complete or partial
what is complete failure of fusion?
Complete
Uterus didelphys:
2 uterine horns
2 cervices
2 vaginas
what is partial faliure of fusion?
Partial
1. Bicornuate bicollis uterus - 2 horns, 2 cervixes
2. Bicornuate unicollis uterus - 2 horns, one cervix - heart shaped
what is Bicornuate bicollis uterus
2 horns, 2 cervixes
- faliure of fusion - partial
what is Bicornuate unicollis uterus
2 horns, one cervix - heart shaped
failure of fusion - partial
what is the heart shaped uterus called?
Bicornuate unicollis uterus
what is the most common congenital anomaly?
failure of resorption
what is failure of resorption?
complete or partial
what is complete failure of resorption?
Complete
1. Septate uterus
septate goes all the way down from fundus to cervix - 2 endometrial cavities
what is partial failure of resorption?
Partial
1. Subseptate uterus
2. Arcuate uterus - slight indentation - y shape
Didelphys/Bicornuate
is a…
faliure of fusion
Septate/Subseptate
is a….
failure of resorption
widely splayed uterine horns indicates…
failure of fusion
Diethylstilbestrol (DES)
Prescribed man-made estrogen drug to help prevent premature deliveries and miscarriages.
uterine malformations (T-shaped uterus) in daughters
Proven to cause clear cell carcinoma of the vagina and cervix, fertility problems
t shaped uterus is an abnormality found in
des daughters
