BIOD 152 EXAMS/ ALL MODULES 1-
m m m m m
5 COMPLETE STUDY GUIDE QUESTIONS 2024. WITH CORRECT
m m m m m m m
VERIFIED m
ANSWERS
BIOD 152 module 1 Exam Questions with Answers.
m m m m m m m
Whatmcausesmthemdifferencesminmintensitymofmamsensation?m-mANSWERm-
m Due m tomthemnumbermofmneuronsm stimulated mandm the mfrequency mwithmwhichm they marem stimulated
Anmimpulse mfrommamneuronmmovesminmbothmdirectionsmTmormFm-mANSWERm-mFalse
Whatmismmeantmbymneuronmsignalsmbeingmelectrochemicalminmnature?m-mANSWERm-
m Them signalm movesm frommelectricalm(throughm themneuron)mtom chemicalm (inm themsynapse)m tomelectricalm
againmonce mthe msignalmreachesmthe mnextmneuron
Whatmismthe mchemicalmportionmofmneuronmsignalmtransmission?m-mANSWERm-mneurotransmitters
Howmismanmimpulsempassedmfrommonemnervemcellmtomanother?m-mANSWERm-
m Therem ism am minutemfluid-
filledmspace,mcalledmamsynapse,mbetweenmthemaxonmterminalmofmthemsendingmneuronmandmthemdend
rite mofmthe
receivingmneuron.mWhenmamnervemimpulsemreachesmthemendmofmanmaxon,mneurotransmittersmaremreleased
m intom them synapse.m Thesem bindmwithm am receptorm onm them nextm neuron,m openingmNa+m gatesm inm them receivi
ngmdendrite mwhichmcausesmdepolarizationmandmthe mimpulse mismcarried
, 2
Describe mthe mmovementmof mnerve mimpulsesminmthe mPNSm-mANSWERm-
m the m PNSm receives mimpulses mfrommthem sensory morgans mviam the mafferentmdivision mandmthenmrelaysmsignalsm
ormimpulsesmfrommthe mCNSmtommusclesmandmglandsmviamthe mefferentmdivision
Whatmare mthe m2mdivisionsmofmthe mefferentmdivisionmof mthe mPNS?m-mANSWERm-
m somaticm systemm andm autonomicm system
Whatmismthe mfunctionmofmthe msympatheticmnervousmsystem?m- mANSWERm-
m activates m andm prepares m the m body m form vigorous m muscularm activity, m stress, m andm emergencies
Whatmismthe mfunctionmofmthe mparasympatheticmnervousmsystem?m-mANSWERm-
moperates m duringm normalm situations, m permits m digestion, m andm conserves m energy.
Whatmismcontrolledmbymthe msomaticmandmautonomicmnervousmsystemsm-mANSWERm-
m The m somaticm systemmcontrols mthe mmovementsmof mskeletalmmuscles,mskin,mandmjoints. mThemautonomicm sy
stemmnervesmcontrolmthe mglandsmandmsmoothmmusclesmof mthe minternalmorgans
Whatmismthe mdifference mbetweenmanatomymandmphysiology
?m– mANSWERm-mAnatomy-
m studymof mthe mstructure mof mbodympartsmPhysiology-
m studymof mthe mfunctionsmof mthe mbody
The mphysiologymof mthe mbodymdependsmonmthe manatomymof mthe mbody
Howmdoesmthe mnervousmsystemmwork?m–
ANSWERm-
m receives mandmprocessesminfomandmsendsmoutmsignalsmtom the m muscles m andm glandsm tom elicitm anm response
Listmthe m2mpartsmof mthe mnervousmsystem.m–
ANSWERm-mCNSmandmPNSm(centralmnervousmsystemmandmperipheralmnervousmsystem)
Howmare mthe mpartsmof mthe mcentralmnervousmsystemmprotected?m–
ANSWERm-mThe mskullmprotectsmthe mbrainmandmthe mvertebrae mprotectmthe mspinalmcord
Whatmare mthe mcollectionsmof mcellmbodiesminmthe mCNSmcalled?m- mANSWERm-mNuclei
, 3
Whatmare mthe mcollectionmof mnerve maxonsminmthe mCNSmcalled?m-mANSWERm-mTracts
Whatmismincludedminmthe mperipheralmnervousmsystem?m-mANSWERm-mcranialmnervesmandmspinalmnerves
Whatmare mthe mcollectionsmof mcellmbodiesminside minmthe mPNSmcalled?m-mANSWERm-mGanglia
Whatmare mthe mcollectionsmof mnerve maxonsminmthe mPNSmcalled?m-mANSWERm-mNerves
Whatmare mthe m2mdivisionsmofmthe mPNS?m-mANSWERm-mafferentmandmefferent
Whatmare mthe m2mdivisionsmofmthe mautonomicmnervousmsystem?m-mANSWERm-
m sympatheticm andm parasympathetic
labelmcomponentsmofmamneuronm-mANSWERm-msee mimage
Listm3munusualmcharacteristicsmof mneuronsm-mANSWERm-
m Neurons mdomnotmundergommitosism(cellm division), mrequire menormous mamountsmof mfuelmbeingmable mtomsur
vive mjustmminutesmwithoutmoxygenmandmcanmlastmanmentire mhumanmlifetime
Listmthe m3mpartsmthatmallmneuronsmcontainm-mANSWERm-mdendrites,mcellmbody,maxon
Describe mthe mstructure mandmfunctionmof mthe mneuronmcellmbodym-mANSWERm-
m Synthesizesm allm nerve mcellm products,mconsists mofmamlarge mnucleusmwithmsurroundingmcytoplasmmcontainin
gmthe mnormalmorganelles
Describe mthe mstructure mandmfunctionmof mthe mdendrite m-mANSWERm-mNumerousmshortmextensionsmthat
emanate mfrommthemcellmbodymwhichmreceiveminformationmfrommothermneuronsmconductingmthosemnerve mi
mpulsesmtowardmthe mcellmbody
Describe mthe maxon,mincludingmthe mnumberminmeachmneuron,mfunction,mstructure mandmorganellesm-
m ANSWERm -
m Conducts m nervem impulsesm away mfrommthem cellm body mtomitsm axonmterminals m wherem itmism emittedmacrossm
amsynapse mtomthemdendrite mofmanothermneuron.mAxonsmare mcomposedmofmcellsmlikemthemcellmbodymbutmlac
kmroughmendoplasmicmreticulum
, 4
Describe mthe mfunctionmandmsite mofmsynthesismandmstorage mofmneurotransmittersm-mANSWERm-
m One m of mthe mmainmfunctions mofmthem cellm body mism tom manufacture mneurotransmitters, mwhichm arem chemica
lsmstoredminmsecretorymvesiclesmatmthemendmofmaxonmterminals.Whenmneurotransmittersmare mreleasedmbym
the maxonmterminalmvesicles,mtheymcarrymthe mtransmissionmofmthe mnervemimpulsemfrommone mneuronmtoman
other
Whatmismamsynapse?m-mANSWERm-mGapmbetweenmneurons
Where mismampost-synapticmneuronmfound?m-mANSWERm-maftermthe msynapse
Whatmneuronsmhavemthree mormmoremextensionsmfrommthemcellmbodymandmhave monemaxonmandmmanymden
drites?m- mANSWERm-mMultipolar
Whatmneuronsmhave mamcentralmcellmbodymwithmtwomextensions?m-mANSWERm-mBipolar
Whatmneuronsmhavemonemextensionmoffmthemcellmbodymwhichmbranchesmintom2;monemcentralmprocessmrunni
ngmtomthe mCNSmandmanothermperipheralmprocessmrunningmtomthe msensorymreceptor?m-mANSWERm-
m Unipolar
Whatmneuronsmare munipolarmandmfunctionmtomcarryminfomfrommthe mPNSmtomthe mCNS?m-mANSWERm-mSensory
These mtypesmofmneuronsmare mcalledmassociationmneuronsm-mANSWERm-mInterneurons
Whatmneuronsmsendmmessagesmfrommthe mCNSmtomthe mPNS?m-mANSWERm-mMotor
Whatmismthe mfunctionmofmneuroglialmcells?m-mANSWERm-
m Neuroglialm cellsmare msupportmcells, mhelpingmtomsupportmneurons mtomenable mthemmtomthriveminm theirm nee
dedmenvironment
Whatmare mthe mPNSmneuroglialmcells?m-mANSWERm-mSchwannmcellsmandmsatellite mcells
Axonsmcannotmregenerate minmthe mPNSmTmormFm-mANSWERm-mFalse
MyelinmsheathmismcontinuousmandmhasmnomgapsmTmormFm-mANSWERm-mFalse
Listmthe mfourmtypesmof msupportmneuroglialmcellsminmthe mCNSmandmfunctionmof meachm-mANSWERm-