10/8/12 Flashcards
What 2 findings, other than muscle wasting, are commonly found in myotonic dystrophy?
cataracts and cardiac conduction defects
Alk phos is most commonly elevated in diseases of the _______ or _______.
bone or liver
What lab value should be assessed to differentiate liver from bone etiology when the alk. phos. is moderately increased?
γ-glutamyl transpeptidase
What, again, is the main function of the HCG produced by the placenta in pregnancy?
to keep the corpus luteum producing progesterone
Which cholinergic receptors are present on the SA node? (They are only found here!)
M2
Which of the 3 primary germ cell layers do the pharyngeal clefts give rise to?
ectoderm
Which of the 3 primary germ cell layers do the pharyngeal arches give rise to? What else?
mesoderm and neural crest
Which of the 3 primary germ cell layers do the pharyngeal pouches give rise to?
endoderm
Branchial cysts result from the incomplete obliteration of what embryonic structure? Be specific?
2nd or 3rd pharyngeal cleft (aka groove)
What factors does H. influenzae require to grow on culture?
NAD and hematin (factors V and X)
What are the 2 ways in which to provide factors V and X for H. influenzae growth on blood agar?
gentle heating or growth w/ beta-hemolytic organism (e.g. S. aureus)
What bacteria usu. requires cold temps to grow?
Listeria
What are the signs of primary toxoplasma infection?
fever, lymphadenopathy
What visual field defect would be caused by a lesion of the right optic tract?
left homonymous hemianopia
What visual field defect would be caused by a lesion of the left lateral geniculate nucleus?
right hoonymous hemianopia
