Exam 1: BIOS252/ BIOS 252 (New 2025/ 2026 Update) Anatomy and Physiology II Review| Qs & As| Grade A| 100% Correct (Verified Answers)- Chamberlain

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Exam 1: BIOS252/ BIOS 252 (New 2025/ 2026 Update) Anatomy and Physiology II Review| Qs & As| Grade A| 100% Correct (Verified Answers)- Chamberlain Q: Cervical Plexus Answer: C1-C5, Serves the head and neck area (upper limbs) (incoming sensory signals and outgoing motor signals) Notable Nerves- Phrenic nerve C3-C5 Roots and nerves Q: Brachial Plexus Answer: C5-T1, Nerves to the upper limb, neck, and shoulder muscles Notable nerves- Radial, Median, and Ulnar Roots, Trunks, Divisions, Cords, and Branches Q: Lumbar Plexus Answer: L1-L5, Nerves to abdominal wall, genitals, and lower limb Notable nerves- Lateral cutaneous, femoral Roots and Divisions Q: Sacral and Coccygeal Plexus Answer: L5-S5, Nerves to the buttock, perineum, and lower limb Notable nerves- Sciatic nerve (Tibial and Common Fibular) Roots and Divisions Q: Reflex Answer: A fast, involuntary, and predictable sequence of events that function in an arc (Reflex Arc) *Sensory Receptors *Sensory Neurons *Interneuron *Motor Neuron (Flexor [withdrawal] Reflex) *Effector Q: Ipsil Answer: Same side Q: Contralateral Answer: Opposite side Q: Monosynaptic Answer: One synapse Q: Polysynaptic Answer: Multiple neurons stimulated Q: Sensory Tracts Answer: Usually begin with spino-; afferent pathways Q: Spinothalamic Answer: (antero and lateral) Takes pain, temperature, itch, and tickle to the thalamus; decussates in the cord upon level of entry Q: Posterior (Dorsal) Columns Answer:

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Examl1:lBIOS252/lBIOSl252l(Newl2025/l2026l
Update)lAnatomylandlPhysiologylIIlReview|l
Qsl&lAs|lGradelA|l100%lCorrectl(Verifiedl
Answers)-lChamberlain
Q:lCervicallPlexus

Answer:
C1-
C5,lServeslthelheadlandlnecklareal(upperllimbs)l(incominglsensorylsignalslandlou
tgoinglmotorlsignals)
NotablelNerves-lPhreniclnervelC3-C5
Rootslandlnerves

Q:lBrachiallPlexus

Answer:
C5-T1,lNervesltolthelupperllimb,lneck,landlshoulderlmuscles
Notablelnerves-lRadial,lMedian,landlUlnar
Roots,lTrunks,lDivisions,lCords,landlBranches

Q:lLumbarlPlexus

Answer:
L1-L5,lNervesltolabdominallwall,lgenitals,landllowerllimb
Notablelnerves-lLaterallcutaneous,lfemoral
RootslandlDivisions

,Q:lSacrallandlCoccygeallPlexus

Answer:
L5-S5,lNervesltolthelbuttock,lperineum,landllowerllimb
Notablelnerves-lSciaticlnervel(TibiallandlCommonlFibular)
RootslandlDivisions

Q:lReflex

Answer:
Alfast,linvoluntary,landlpredictablelsequencelofleventslthatlfunctionlinlanlarcl(Ref
lexlArc)
*SensorylReceptorsl
*SensorylNeurons
*Interneuron
*MotorlNeuronl(Flexorl[withdrawal]lReflex)
*Effector

Q:lIpsil

Answer:
Samelside

Q:lContralateral

Answer:
Oppositelside

, Q:lMonosynaptic

Answer:
Onelsynapse

Q:lPolysynaptic

Answer:
Multiplelneuronslstimulated

Q:lSensorylTracts

Answer:
Usuallylbeginlwithlspino-;lafferentlpathways

Q:lSpinothalamic

Answer:
(anterolandllateral)lTakeslpain,ltemperature,litch,landltickleltolthelthalamus;ldecus
sateslinlthelcordluponllevelloflentry

Q:lPosteriorl(Dorsal)lColumns

Answer:

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