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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 |