APHY 101 Chapter 12 Nervous System & Nervous Tissue | Ivy Tech | 2026 Study Guide

APHY,./101,./Ch,./12,./,./Nervous,./System,./and,./Nervous,./Tissue,./Ivy,./Tech


Nervous,./System,./-,./correct,./answer,./✔ ✔
Master,./controlling,./and,./communicating,./system,./of,./body;,./Cells,./comm
unicate,./via,./electrical,./and,./chemical,./signals.


Central,./Nervous,./System,./-,./correct,./answer,./✔ ✔
(CNS),./Consists,./of,./the,./brain,./and,./spinal,./cord.,./It,./is,./responsible,./for,./int
egrating,,./processing,,./and,./coordinating,./sensory,./data,./and,./motor,./comma
nds.


Peripheral,./Nervous,./System,./-,./correct,./answer,./✔ ✔
(PNS),./Includes,./all,./neural,./tissue,./outside,./the,./CNS;,./Consists,./mainly,./of
,./nerves,./that,./extend,./from,./brain,./and,./spinal,./cord,./-


,./spinal,./nerves,./to,./and,./from,./spinal,./cord,./and,./cranial,./nerves,./to,./and,./from,./


brain.

,Receptors,./-,./correct,./answer,./✔ ✔
Sensory,./structures,./that,./detect,./changes,./in,./the,./internal,./or,./external,./envi
ronment.


Visceral,./Sensory,./Receptors,./-,./correct,./answer,./✔ ✔
Receptors,./that,./monitor,./internal,./organs,./like,./heart,,./spleen.



Somatic,./Sensory,./Receptors,./-,./correct,./answer,./✔ ✔
Receptors,./that,./provide,./position,,./touch,,./pressure,,./pain,,./and,./temperatu
re,./sensations.,./Afferent,./fibers,./convey,./impulses,./from,./skin,,./skeletal,./mus
cles,,./bones,,./and,./joints,./to,./CNS.


Special,./Sensory,./Receptors,./-,./correct,./answer,./✔ ✔
Receptors,./that,./provide,./sensations,./of,./smell,,./taste,,./vision,,./balance,,./an
d,./hearing.,./Afferent,./fibers,./convey,./impulses,./from,./special,./sense,./organs,./t
o,./the,./CNS.


Sensory,./Division,./-,./correct,./answer,./✔ ✔
This,./division,./of,./the,./PNS,./brings,./information,./to,./the,./CNS,./from,./recept
ors,./in,./peripheral,./tissues,./and,./organs.,./Afferent,./-,./Monitors.



Information,./Processing,./-,./correct,./answer,./✔ ✔
Includes,./the,./integration,./and,./distribution,./of,./information,./in,./the,./CNS.,./
Decides.

, Motor,./Division,./-,./correct,./answer,./✔ ✔
This,./division,./of,./the,./PNS,./carries,./motor,./commands,./from,./the,./CNS,./to,./
peripheral,./tissues,./and,./systems.,./Efferent,./-,./Commands.


Somatic,./Nervous,./System,./-,./correct,./answer,./✔ ✔
(SNS),./Controls,./skeletal,./muscle,./contractions.


Autonomic,./Nervous,./System,./-,./correct,./answer,./✔ ✔
(ANS),./Automatically,./regulates,./smooth,./muscle,,./cardiac,./muscle,,./glan
ds,,./and,./adipose,./tissue.



Effectors,./-,./correct,./answer,./✔ ✔
Target,./organs,./(muscles,./or,./glands),./whose,./activities,./change,./in,./respon
se,./to,./neural,./commands.


Nervous,./tissue,./cells,./types,./-,./correct,./answer,./✔ ✔
Neurons,./and,./Neuroglia


General,./Regions,./of,./Neurons,./-,./correct,./answer,./✔ ✔
Dendrites,,./Cell,./Body,,./and,./Axon.