exam 1 pt 4 Flashcards
what is caused by paternal nondisjunction monosmy?
turner syndrome
-that is the etiology
what are the manifestations of turners?
-female
-short but proportional
-low sexual development and amenorrhea (no menstruation)
Kinefelter etiology?
maternal or paternal polysomy
xxy
kinefelter pathogenesis?
testes do not respond to gonadotropin leading to hypogonadism
kinefelter manifestation
gynecomastia, low body hair, tall and not propeortional
what is in the first 8 wks of prego where organs are suseptable to tertogens?
period of vulnerability
growth retardation, CNS impairemet, small palpebral fissures, thing vermillion boder and longer and flat philtrum is caused by?
alc while prego
growth retardation, miccrocepthaly, hydrocephaly, anemia, thrombocytopenia, pneumonitis, mycocarditis, heart disorder caused by?
infectious agent crossing palcenta
sources of folic acid
leafy greens. citrus acid, animal products
what does ultasound tell you?
how many, age, size, position, amount of amniotic fluid, placental location and structural abnormalities
what can be diagnose with maternal serum screening
trisonomy 21, 13 and 18
AFP (alpha fetoprotein) is high?
in NTS open sipina bifeda, anencephaly or anterior abdominal wall defect
important chekpoint
g2 to M
cyclins, CDK, CDKI are?
proteins in cell cycle
CDKI are?
tumor suppressors
has slow growth, can regress, resembles parent tissue, well differentiated, has connective tissue capsule, stay local to origin without metastasizing?
benign neoplasm
rapid growth, spread, undifferentiated, no parent resemblence, rob nutrients from normal cells, secrete hormones and toxins for inflammatory response, metastasize?
malignant neoplasms
3 types of metastasis?
- direct invasion and extension
- seeding of cancer into body cavities
- lymphatic and hematogenous spread
when do cancers secrete proteolytic enzymes?
during invasion and extension
what body cavities do tumors seed?
pleural, pericardial and peritoneal
how do tumors enter systemic circulation?
thoracic duct
growth factors and transcription factors are?
proteo-oncogenes
-control normal growth
-“GAS PEDAL”
what is a mutated proteo-oncogene?
oncogene
-uncontrolled proliferation
RB gene
normally is a tumor suppressor gene but becomes LOF when mutated
-uncontrolled proliferation