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16 Cards in this Set
- Front
- Back
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What is the gene defect in Turner's syndrome and what organs are present and missing?
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XO, ovaries are missing or "streak ovaries", but the uterus is present
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What artery courses deep to the pterion and what is it a branch of?
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Middle meningeal artery, a branch of the maxillary artery
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What are B cell surface markers?
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CD19, CD20, CD21
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Which circulating hormones prevent lactogenesis and promote breast growth and development during pregnancy?
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Estrogen and progesterone
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What can be responsible for cor pulmonale in females between the ages of 20 and 40?
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Primary pulmonary hypertension
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In which study design are exposure and outcome measured simultaneously at a particular point in time?
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cross sectional study
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What is the inheritance pattern of classical galactosemia?
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recessive
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What is the urachus a remnant of? What symptoms occur if it remains patent?
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A remnant of the allantois that connects the bladder to the yolk sac. If it remains patent, urine gets discharged from the umbellicus
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What type of junctions connect osteocytes?
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Gap junctions (canallicular processes that conect osteocytes in neighboring lamellae)
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What is the MOA of Acyclovir?
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Must first be phosphorylated by viral thymidine kinase (rate limiting step) and then inhibits DNA polymerase. Works better against HSV and zoster than CMV and EBF
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What is the characteristic lesion and bacteria in Lyme disease?
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Erythema chronicum migricans (red circle with central clearing) Caused by Borrelia Burgdorferi
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What is the causative bacteria in Rocky Mountain Spotted Fever?
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Rickettsia rickettsiae
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What is the most common form of congenital adrenal hyperplasia and what are its symptoms?
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21-hydroxylase deficiency is most common. Cant convert Progesterone to 11-deoxycorticosterone. Virilization and salt wasting.
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What is the biochemical mechanism of hepatic encephalopathy?
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Increased ammonia metabolism=> depleted glutamate and alphaketoglutarate and increased glutamine => astrocyte swelling and dysfunction
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What triggers the release of Acetyl Choline from presynaptic nerve terminals?
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A voltage dependent calcium release
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What virulence factor allows Strep Pyogenes to evade phagocytosis?
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M protein
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