"embryology" Post in this tag
warfarin effects on fetus
Bone and cartilage deformities (stippled epiphyses, nasal and limb hypoplasia), optic nerve atrophy, fetal cerebral hemorrhage.
embryology
reproductive
OBGY
Jul 8, 2020, 4:57 AM
HirotoShishido
mnemonics for early embryonic development
2 weeks = 2 layers. (epiblast, hypoblast)
3 weeks = 3 layers. (ecto, meso, endo)
week 3-8
Extremely susceptible to teratogens.
4 weeks = 4 limbs and 4 heart chambers.
8 weeks = Gait at week 8.
10 weeks = Tenitalia.
embryology
Jul 8, 2020, 4:40 AM
HirotoShishido
metanephric mesenchyme, ureteric bud
Metanephric mesenchyme (ie, metanephric blastema)
→ glomerulus through to distal convoluted tubule (DCT)
Ureteric bud (metanephric diverticulum)
derived from caudal end of mesonephric duct → gives rise to ureter, pelvises, calyces, collecting ducts;
renal
embryology
UWorld
Jul 8, 2020, 12:01 AM
HirotoShishido
origins of meninges
Dura mater— Derived from mesoderm.
Arachnoid mater— Derived from neural
crest.
Pia mater— Derived from neural crest.
neurology
embryology
Jul 6, 2020, 12:55 AM
HirotoShishido
fetal erythropoeiesis
Yolk sac (3–8 weeks)
Liver (6 weeks–birth)
Spleen (10–28 weeks)
Bone marrow (18 weeks to adult)
hematology
embryology
Jul 1, 2020, 5:25 AM
HirotoShishido
what embryonic structures give rise to SVC/IVC
Right common cardinal vein and right anterior cardinal vein→ SVC
Posterior, subcardinal, and supracardinal veins→ IVC
cardiology
embryology
Jun 27, 2020, 2:12 AM
HirotoShishido
Pierre Robin sequence
micrognathia, glossoptosis, cleft palate, airway obstruction(☆improve with prone position)
☆A sequence occurs when a single developmental defect causes a cascade of additional malformations.
embryology
pediatrics
UWorld
May 13, 2020, 7:15 PM
HirotoShishido
hypospadias, epispadias
pathogenesis
hypo→ failure of urogenital folds(penile urethra, labia minora) to fuse
epi→ faulty positioning of genital tubercle (glans penis, glans clitoris)
*labioscrotal swelling(scrotum, labia majora)
urogenital sinus(Cowper, prostate, Bartholin, Skene)
reproductive
embryology
UWorld
Feb 16, 2020, 10:56 PM
HirotoShishido
cleft palate, cleft lip
etiology
cleft palate→ when the lateral palatine processes or the median palatine processes fail to fuse with the nasal septum
cleft lip→ when the maxillary process and merged nasal processes (= ☆intermaxillary segment) fail to fuse
*failed fusion of 2 medial nasal prominences→ holoprocencephaly
embryology
Dec 3, 2019, 8:12 PM
HirotoShishido
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