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1. Dendritescontainthenuclei,ribosomes,mitochondria,andotherstructuresfoundinmost
.A A
. A
. .
A A
. v v cells.
a. True
b. False
ANSWER: False
2. Neuronsreceiveinformation andtransmit it t o othercells.
.A v A
. A. A. A
.
a. True
b. False
ANSWER: True
3. Santiago RamónyCajal used special staining techniquesto reveal that thebrainiscomposed ofindividual cells.
A. A. v v i v A. v v .
A A. v
a. True
b. False
ANSWER: True
4. An efferent axon carriesinformation awayfrom a structure.
v A. v v i v v
a. True
b. False
ANSWER: True
5. Thegreaterthesurface area of a dendrite,themore informationit can receive fromother neurons.
.
A A. v v v v v A. v v
a. True
b. False
ANSWER: True
6. Neuronsaredistinguishedfromother cells bytheirshape.
A
. v v v
a. True
b. False
ANSWER: True
7. Theroleofglial cellsistoact like―glue‖or scaffoldingto supporttheneurons.
A. A
. A
. A
. v .A v
a. True
b. False
ANSWER: False
8. Glialcellstransmit informationacrosslongdistances.
v v v
a. True
b. False
ANSWER: False
9. There aretwotypes of glial cellsthat produce myelin sheath. In the central nervous system, Schwann cells fulfill this
A. v v v v v v v v v v v v v v A.
vrole and, in the periphery, oligodendrocytes produce it.
v v v v v v v
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a. True
b. False
ANSWER: False
10. Theblood-brain barrierismade up ofcloselypacked glial cells.
v v A. v
a. True
b. False
ANSWER: False
11. Thedifference i n voltagein arestingneuronis calledtherestingpotential.
A
. v .
A v A
.
a. True
b. False
ANSWER: True
12. Increasingtheelectrical gradient forpotassiumwillreducethetendencyfor potassiumions toexitthe neuron.
v v v v v
a. True
b. False
ANSWER: True
13. At the restingpotential,the potassiumchannels arecompletelyclosed andthesodiumchannels are almost closed.
v A. A
. v .
A v v A
. A
. A. v v
a. True
b. False
ANSWER: False
14. Dr. Skinner is workingin the lab measuringthe voltage of neurons, and duringone condition,she tried to
v v v v v v v v v v v v v A.
vdepolarize the neurons from -70 mV to -80 mV.
v v v v v v v v
a. True
b. False
ANSWER: False
15. Actionpotentialscan be producedinthedendrites of some neurons. A
. A. v A
. A. v v
a. True
b. False
ANSWER: False
16. Thetwo basic kinds ofcells in the nervous systemare
.A A. v v A. A
. A. v .
a. neuronsand glia A
. v
b. dendritesand axons A
. v
c. ribosomes and lysosomes v A
.
d. neuronsandaxons
ANSWER:a
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17. SantiagoRamon yCajal demonstrated that . v v A.
a. atrest,theneuronhasanegative chargeinside its membrane A
. v v v v
b. neuronsareseparate fromone another v v v
c. neuronscommunicateat specializedjunctionscalledsynapses
.A A. A
. A
.
d. actionpotentialsfollowtheall-or-nonelaw
A
.
ANSWER:b
18. Both and sharedthe Nobel PrizeforPhysiologyor Medicine in1906. A
. A. v v v
a. Golgi and Cajal v A.
b. Cajal andSherrington v
c. Sherringtonand Golgi v
d. Cajal andKalat v
ANSWER:a
19. Dr. Kimi studies the plasma membrane of neurons. He specifically researches the specialized
v v v v v v v v v v v v thatallowin
v
v important things like water, oxygen, sodium, and so on.
v v v v v v v v
a. lipid channels A.
b. proteinchannels
c. lipidreceptors A
.
d. proteinreceptors
ANSWER:b
20. Neurons differ most stronglyfrom otherbodycellsin their
A
. v v i A
. A. .
a. temperature
b. shape
c. osmoticpressure
d. mitochondria
ANSWER:b
21. What do neurons have thatother cells do not?
A
. v A. v v v v
a. Aplasma membrane
A
. v
b. Large,branchingextensions
c. Proteinchannels
d. An endoplasmic reticulum
A. A.
ANSWER:b
22. Dr. McLaughlin’slabstudies how newlyformed proteins arefoldedinside neurons. Theywould be most interested in
v v v v v v v v v v v v v v
vstudying the . v
a. endoplasmic reticulum A.
b. mitochondria
c. ribosomes