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Chapter 01 a
a. True
b. False
ANSWER:a False
10. Theablood-brainabarrieraisamadeaupaofacloselyapackedaglialacells.
a. True
b. False
ANSWER:a False
11. Theadifferenceainavoltageainaaarestinganeuronaisacalledathearestingapotential.
a. True
b. False
ANSWER:a True
12. Increasingatheaelectricalagradientaforapotassiumawillareduceatheatendencyaforapotassiumaionsatoaexitatheaneuron.
a. True
b. False
ANSWER:a True
13. Atathearestingapotential,atheapotassiumachannelsaareacompletelyaclosedaandatheasodiumachannelsaareaalmostaclosed.
a. True
b. False
ANSWER:a False
14. Dr.aSkinneraisaworkingainathealabameasuringatheavoltageaofaneurons,aandaduringaoneacondition,asheatriedatoadepolarizeath
eaneuronsafroma-70amVatoa-80amV.
a. True
b. False
ANSWER:a False
15. Actionapotentialsacanabeaproducedainatheadendritesaofasomeaneurons.
a. True
b. False
ANSWER:a False
16. Theatwoabasicakindsaofacellsainatheanervousasystemaarea .
a. neuronsaandaglia
b. dendritesaandaaxons
c. ribosomesaandalysosomes
d. neuronsaandaaxons
ANSWER:a a
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Chapter 01 a
17. SantiagoaRamonayaCajalademonstratedathata .
a. atarest,atheaneuronahasaaanegativeachargeainsideaitsamembrane
b. neuronsaareaseparateafromaoneaanother
c. neuronsacommunicateaataspecializedajunctionsacalledasynapses
d. actionapotentialsafollowatheaall-or-nonealaw
ANSWER:a b
18. Botha anda sharedatheaNobelaPrizeaforaPhysiologyaoraMedicineaina1906.
a. GolgiaandaCajal
b. CajalaandaSherrington
c. SherringtonaandaGolgi
d. CajalaandaKalat
ANSWER:a a
19. Dr.aKimiastudiesatheaplasmaamembraneaofaneurons.aHeaspecificallyaresearchesatheaspecializeda
thataallowainaimportantathingsalikeawater,aoxygen,asodium,aandasoaon.
a. lipidachannels
b. proteinachannels
c. lipidareceptors
d. proteinareceptors
ANSWER:a b
20. Neuronsadifferamostastronglyafromaotherabodyacellsainatheira .
a. temperature
b. shape
c. osmoticapressure
d. mitochondria
ANSWER:a b
21. Whatadoaneuronsahaveathataotheracellsadoanot?
a. Aaplasmaamembrane
b. Large,abranchingaextensions
c. Proteinachannels
d. Anaendoplasmicareticulum
ANSWER:a b
22. Dr.aMcLaughlin’salabastudiesahowanewlyaformedaproteinsaareafoldedainsideaneurons.aTheyawouldabeamostainterestedainast
udyingathea .
a. endoplasmicareticulum
b. mitochondria
c. ribosomes
CopyrightaCengageaLearning.aPoweredabyaCognero. Pagea3
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