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Retired NBME 21 Answers

nbme21/Block 4/Question#45 (reveal difficulty score)
During an experiment, an investigator ...
NMDA receptors are blocked by Mg2+ at the resting membrane potential ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: pharm neuro magnesium repeat

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 +59  upvote downvote
submitted by โˆ—niboonsh(409)
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yb/.mw-Hhu2DuceuvvtawQh4:w/wco=tots/pzo.t?w fi ru ayzl ikle e,m this si a dogo serefhrre idevo

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d_holles  nmigAaz odvie de.du whooSme veren aeedrnl itsh in euorn l.ol +7
aag  Amwseeo diov!e Is ihts hwy uoy nca ivge +gM2 to spamlieac aepntit,s seeaubc if o,s dmni oadmdng l.bnow +4

effect of glutamate antagonist on pt with acute cerebral infarction = targets NMDA receptor

decreases calcium entry into neurons = decreased excitotoxicity = promotes recovery from acute cerebral infarction.

+1/- namesthegame22(14)


 +5  upvote downvote
submitted by โˆ—cantaloupe5(87)
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This one saw ktricy but I iktnh you ovldcuโ€™e odne htsi noe oihwutt wdokenelg fo DANM ote.prscre Smet lodt yuo tath uamteatgl vescatati bhto noAMD-Nn nad ANMD cestrerpo tbu ti acvdtetia nylo -AnMnNoD ctsrporee ni eth elary s.phea athT nmesa MAND esrotpcre avctiate rfate nNoDnM-A ertr.eoscp hatT eansm ogshemint saw elyandgi NAMD cpeorret tvaanicigt and het lyno awesnr taht emad nssee as the Mg nbighniiit MDNA at gntires poiea.nltt Ocen eht lcle si ddileparezo yb nNnA-oDM er,tsecpro NMAD rsptorcee nca be veac.tdati

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hungrybox  I /gti'fdtorodn nokw tish dfiaotc nda nreraowd it ot teh tcrecro weanrs nda a wrnog rnsw.ea uesGs hwhci neo I ?csoeh +15
yotsubato  Tht>a eamsn tenhigmos saw deiyagln AMND prtcoree aanctvtgii dna the yoln narwes tath aedm enses as hte gM itinnibgih MDAN at sirgnte no .a apt ehWt lit emska hte nistfag gntiga ticsnike checio nrctiorec ?nteh +5
imgdoc  NADM tpscorree rea ohbt alovegt daetg nad aidnlg tegad n.haeclsn Gaetmulta adn satartepa ear ooesudgnen lagnids for hist eocrrpt.e gdiBinn of oen of the ldnagsi is qreuried to peon teh ahencnl htsu it ihxsetib shtcaicercsriat fo a nagidl clh.nnae If mE (mnamereb potatl)nie is oerm einevtag tanh -70 Vm, dgnbnii fo eth ngdlai esod NTO pneo eht hnalecn 2M+(g clkob no teh DANM .rpeerc)ot IF Em is less eivtagen htan -70 Vm niigbdn of eht dnlaig nopes hte naehlnc ne(ve hought on 2+gM okblc at siht Em, nhcealn llwi otn eonp outthwi adnlgi ning.dib u tO fo het nraesw schieoc ylno DNMA tcorseper eokldcb yb g+2M smkae en.ses pH oe tihs .hpels +8
divya  stewe nepxoaltina cimgod +
lovebug  lr~el~ay~ tewse. yohkaunt ): +



 +3  upvote downvote
submitted by โˆ—sweetmed(157)
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tA ignrtes rnbemema notaeplit hte NMAD esocrtepr era elcobdk by Mg+2. heT vagteol tenenpdde 2gM+ kclbo si veiredel nupo aoaiiznpreotdl of the ipt-spyntsaoc neebamrm . The igladn nddtepnee acintivtao fo het NDAM etrcorpe risureqe n-citviaooact by otw gilns,ad amylne taetaulgm and gile.nyc

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 +0  upvote downvote
submitted by โˆ—okokok1(38)
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An trpnomtai taelred alccnlii iotlapaicnp is ierm:menebrg vrOanai oamattre nda rhtei caitisnsosao :wthi NA-DtiAnM ceoptrre iliah.pstcnee hiTs ptnersse sa: yrstaiPcihc aecbiutn,srd ryemom isctdief, re,uisezs aeisksyid,sn micuotano lbniitista,y lngeauga ondsntyfiu.c

:FA 0202; gp 822

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 -1  upvote downvote
submitted by vlodkadrinker(7)
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dot'n fgorte utoba the Mg lckob! . . . . . .

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chandlerbas  -/hpcbuwEHP.X:vfwtmcm=Htw/ugt?ohw/Jseaz.oyt +3



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