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