Lab 8 The Nervous System
v v v v BIO201L
(LAB 8) Straighter line anatomy and physiology 1 lab
BIO201L The Nervous System worksheet 2025 Verified
StudentvName:vClickvherevtoventervtext.
KitvCodev(locatedvonvthevlidvofvyourvlabvkit):vClickvherevtoventervtext.
Pre-LabvQuestions:
1. Whatvisvthevprimaryvfunctionvofvthevnervousvsystem?
Thevnervousvsystemvhasvthevworkvofvmaintainingvhomeostasisvinvbody.vThevnervousvsystemvsenses
vstimuli.
2. Whyvdoesvthevcerebralvcortexvcontainvsovmanyvfolds?
Thevcerebralvcortexvcontainsvtoovmanyvfoldsvinvordervforvitsvlargevsurfacevareavtovfitvinvwithinvthevvolu
mevofvthevskull.
3. Whatvisvavnervevimpulse?
Thisvisvanvelectricvsignalvwhichvisvtransmittedvthroughvthevnervevfiber.vItvhasvavwavevofvelectricvdepol
arizationvreversingvthevpotentialvdifferencevacrossvthevnervevmembrane.
4. WhatvarevSchwannvcellsvandvwhatvdovtheyvform?
Schwannvcellsvarevcellsvwhichvformvspiralvlayersvaroundvavmyelinatedvnervevfibervbetweenvtwovnode
svofvRanviervandvformnyelinvsheathvwhichvconsistvofvthevinnervspiralvlayers
5. Whatvisvanvall-or-nonevresponse?
Anvall-or-
nonev responsevinvolvesvavnervevorvavmusclevfibervrespondingvtovavstimulusvrespondingvtovstimulusv
whenvthevsignalvorvstimulusvisvmorevthanvthevthresholdvpotentialvbutvifvitvisvless,vthevnervevorvthevm
usclevfiber,vtherevisvnovresponse.
6. Whatvtwoveffectsvmightvneurotransmittersvhave?vT
hevexcitoryvneurotransmitersvexcitevthevbrain
Thevinhibitoryvneurotransmittersvcoolvthevbrain
Experimentv1:vMicroscopicvAnatomyvofvthevNervousvSystem
Post-LabvQuestions
1. Labelvthevarrowsvinvthevslidevimagesvbelowvbasedvonvyourvobservationsvfromvthevexperiment.
A-vAxon
,Lab 8 The Nervous System
v v v v BIO201L
B-vCellvbodyvofvneuron
C-vPerineurium
D-vAxon
, Lab 8 The Nervous System
v v v v BIO201L
v v v v BIO201L
(LAB 8) Straighter line anatomy and physiology 1 lab
BIO201L The Nervous System worksheet 2025 Verified
StudentvName:vClickvherevtoventervtext.
KitvCodev(locatedvonvthevlidvofvyourvlabvkit):vClickvherevtoventervtext.
Pre-LabvQuestions:
1. Whatvisvthevprimaryvfunctionvofvthevnervousvsystem?
Thevnervousvsystemvhasvthevworkvofvmaintainingvhomeostasisvinvbody.vThevnervousvsystemvsenses
vstimuli.
2. Whyvdoesvthevcerebralvcortexvcontainvsovmanyvfolds?
Thevcerebralvcortexvcontainsvtoovmanyvfoldsvinvordervforvitsvlargevsurfacevareavtovfitvinvwithinvthevvolu
mevofvthevskull.
3. Whatvisvavnervevimpulse?
Thisvisvanvelectricvsignalvwhichvisvtransmittedvthroughvthevnervevfiber.vItvhasvavwavevofvelectricvdepol
arizationvreversingvthevpotentialvdifferencevacrossvthevnervevmembrane.
4. WhatvarevSchwannvcellsvandvwhatvdovtheyvform?
Schwannvcellsvarevcellsvwhichvformvspiralvlayersvaroundvavmyelinatedvnervevfibervbetweenvtwovnode
svofvRanviervandvformnyelinvsheathvwhichvconsistvofvthevinnervspiralvlayers
5. Whatvisvanvall-or-nonevresponse?
Anvall-or-
nonev responsevinvolvesvavnervevorvavmusclevfibervrespondingvtovavstimulusvrespondingvtovstimulusv
whenvthevsignalvorvstimulusvisvmorevthanvthevthresholdvpotentialvbutvifvitvisvless,vthevnervevorvthevm
usclevfiber,vtherevisvnovresponse.
6. Whatvtwoveffectsvmightvneurotransmittersvhave?vT
hevexcitoryvneurotransmitersvexcitevthevbrain
Thevinhibitoryvneurotransmittersvcoolvthevbrain
Experimentv1:vMicroscopicvAnatomyvofvthevNervousvSystem
Post-LabvQuestions
1. Labelvthevarrowsvinvthevslidevimagesvbelowvbasedvonvyourvobservationsvfromvthevexperiment.
A-vAxon
,Lab 8 The Nervous System
v v v v BIO201L
B-vCellvbodyvofvneuron
C-vPerineurium
D-vAxon
, Lab 8 The Nervous System
v v v v BIO201L
