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DIT embryo
Question | Answer |
---|---|
23 yo presents with one testicle. what is he at risk for? | undescended testicle increases risk of germ cell tumors |
24 yo male with testicular cancer. metastatic spread occurs by what route? | paraaortic lymphocele to body |
16 yo female with amenorrhea. no uterus/tubes. 2 round things in the labia majora | androgen insensitivity syndrome (46,xy) |
female scrotum | labia majora |
female prostate | urethral/paraurethral glands of skene |
female glans penis | glans clitoris |
female corpus spongiosum | vestibular bulbs |
female bulbourethral glands | bartholin glands |
female ventral shaft of penis | labia menora |
which gene codes for testes determining faftor? | SRY on Y chr |
female with short stature and no Barr body | turner |
chromosomal XXY | klinefelter |
chromosomal XO | Turner |
presence of ovaries, bt male genitalia | female pseudohermaphrodite |
unable to generate DHT | 5alpha reductase deficiency |
both ovarian and testicular tissues are present | true hermaphrodite |
webbing of neck | turner |
male with Barr body in PMNs | klinefelter |
ambiguous genitalia until puberty, then masculinization | 5alpha reductase deficiency |
most common cause of early cyanosis | tetralogy of fallot |
most common cause of late cyanosis | VSD -> eisenmeger's |
most common cause of primary amenorrhea | Turners |
most common chromosomal disorder | Down's |
most common cause of congenital mental retardation | fetal alcohol syndrome |
2nd most common cause of congenital mental retardation | downs |
3rd most common causes of congenital mental retardation | fragile x |
most common lethal genetic disease of caucasians | CF |
most common cause of congenital malformations in US | fetal alcohol syndrome |
retina | neuroectoderm |
salivary glands | surface ectoderm |
pancreas | endoderm |
mm. of abdominal wall | mesoderm |
thymus | endoderm |
spleen | mesoderm |
aorticopulmonary septum | neural crest |
ant pituitary | surface ectoderm |
post pit | neuroectoderm |
bones of the skull | neural crest |
cranial nerves | neural crest |
most common type of TE fistula | blind upper esophagus; LE connected to trachea |
Potter's syndrome | bilateral renal agenesis; oligohydramnios, flat facies, limb abnormalities, low set ears, pulmonary hypoplasia |
classic presentation of pyloric stenosis | 2 week old with nonbilious projectile vomiting. palpable olive. hypochloremic metabolic alkalosis |
teratogens | smoking, alcohol, ace i, lithium, DES, iodide, valproate, carbamazepine, anti-folate, cocain, diabetes, alkylating agents, tetracyclines, thalidomide, warfarin |