RT Book, Section
A1 Waxman, Stephen G.
SR Print(0)
ID 1186189999
T1 Somatosensory Systems
T2 Clinical Neuroanatomy, 29e
YR 2020
FD 2020
PB McGraw-Hill Education
PP New York, NY
SN 9781260452358
LK accessphysiotherapy.mhmedical.com/content.aspx?aid=1186189999
RD 2024/10/11
AB Input  from  the  somatosensory  systems  informs  the  organism  about  events  impinging  on  it.  Sensation  can  be  divided  into  four  types:  superficial,  deep,  visceral,  and  special.  Superficial  sensation  is  concerned  with  touch,  pain,  temperature,  and  two-point  discrimination.  Deep  sensation  includes  muscle  and  joint  position  sense  (proprioception),  deep  muscle  pain,  and  vibration  sense.  Visceral  sensations  are  relayed  by  autonomic  afferent  fibers  and  include  hunger,  nausea,  and  visceral  pain  (see  Chapter  20).  The  special  senses—smell,  vision,  hearing,  taste,  and  equilibrium—are  conveyed  by  cranial  nerves  (see  Chapters  8,  15,  16,  and  17).  In  addition,  nociceptive  sensation  or  pain-signaling  serves  to  warn  the  organism  when  there  is  contact  with  noxious  or  potentially  damaging  elements  in  the  environment,  or  when  tissue  is  damaged.