The Sensory-Somatic Nervous System The sensory-somatic system consists of 12 pairs of cranial nerves an nerves and d 31 pairs of spinal nerves. nerves.
The PNS consists of sensory PNS consists neurons running neurons running from stimulus receptors that receptors that inform the CNS of the stimuli motor neurons running neurons running from the CNS to the muscles and glands glands - called effectors effectors - that take action. The CNS CNS consists consists of the spinal cord and cord and the brain brain The peripheral nervous system system is subdivided ◦
into the sensory-somatic nervous system and system and the autonomic nervous system system
The
peripheral nervous system (PNS) is the system of nerves outside of the central nervous system (CNS system (CNS or brain and spinal cord).
The central nervous system (CNS) is responsible for all involuntary nerve action, meaning you ! N!T have #or".to initiate it or thin" about it in order for it to
The peripheral nervous system (PNS) runs (PNS) runs from your spinal cord to your appendages (arms, legs, hands and feet) and you ! $%&' T! consciously and voluntarily ma"e this nervous system move or #or".
ncluded in the peripheral nervous system (PNS) are the *+ pairs of cranial nerves, * pairs of spinal spinal nerves and branches entire body. included in their this system areto allthe sensory nerves%lso and the sympathetic and parasym parasympathetic pathetic nerves. The parasympathetic and sympathetic nervous system are part of the autonomic nervous system (%NS).
+o +ons ns$$ Cere Cerebe bell llum um %edulla oblongata
OLEH Prof.H.Dr. GUSBAKTI
prosencephalon
rhombencephalon
Two hemispheres Two Separaed !" fal# cere!ri Inerconneced !" corp$s callos$m
Three poles Three s$rfaces %i&e lo!es
O$er 'ra" maer ( inner whie maer
I has )* !illion ne$rons+ ,)+--- miles of a#ons a# ons and --+---+---+--+---+---+---+----+--- s"napses )/0mm hic1 ))-- s2 cm G"ri and s$lci Imporan s$lci/ 3enral 45 4 5olandic6 s$lc$s+ Laeral 4S"l&ian6 s$lc$s+ s$lc$s+ 3alcarine s$lc$s Parieo/occipial
Brodmann/ 07 Brodmann areas Area 0/ Primar" moor area/ Precenral '"r$s
Area +8+)/ Primar" sensor" area/ Poscenral '"r$s Area ,+ 9/8+ )0+ )+ 00/07 : %ronal associaion
area
Area Area Area Area Area Area
08/ Primar" a$dior" associaion area )-+ )8+ ))/ A$dior" areas *+ 7/ Sensor" associaion areas 0-/ Sereo'nosis area 87/ Primar" &is$al area 89+ 8;/ <is$al associaion areas
=a>or areas/ 486 Somaosensor" area I 4)6 Somaosensor" area II 46 Area * ( 7 406 Area 0-
486
Somaosensor" Area I Poscenral '"r$s Areas +8+) A?erens A?ere ns from opposie side of !od" and !oh sides of face
Sensor" hom$nc$l$s 4lile man6 5emo&al/ ca$ses loss of @ne o$ch ( posiion sense and de@cis in discriminaion of sie and shape.
4)6 Somaosensor" Area II =osl" !$ried in s$perior wall of S"l&ian @ss$re A?erens from from !oh sides of !od" 5emo&al ca$se d de@cis e@cis of discriminaion power
46 Sensor" Associaion Area 4 Areas * ( 76 46 Locaed !ehind S I
Inp$s from S I+ &enro!asal n$cle$s of halam$s+ &is$al and a$dior" core#. 5emo&al ca$ses amorphosynthesis Bilaeral remo&al ca$ses constructional constructional apraxia and apraxia and loss of spaial orienaion 406 Area 0-/ Sereo'nosis 0-/ Sereo'nosis Area Locaed
in s$pramar'inal '"r$s
Appreciaion of primar" senses Discriminaion of sim$li Sereo'nosis 5eco'niion of spaial relaionship Ine'raion of 'eneral+ a$dior" and &is$al sensor" si'nals
%ronal e"e @eld Area 9 Lies anerior o premoor area Sim$laion ca$ses con>$'ae de&iaion of
e"es o opposie side S$ppressor Areas Areas Areas 0s+ )s+ 9s+ 8;s ( )0s Inhi!iion of srech reCe# reCe# Pr Pro>ecs o>ecs o !asal ' 'an'lia an'lia also
Lies anerior o moor areas 0+ , ( 9. =a>or areas are ;/8+ )0+ ) and 00/07. Silen areaor'an of mind
Connections: Aferents- %i!ers from dorsomedial n$cle$s of halam$s pro>ec o areas ;/8) and 00/07. Dorsomedial n$cle$s recei&es recei&es a?er a?erens ens from h"pohalam$s %i!ers from anerior n$cle$s of halam$s pro>ecs circ$i o area )0. I forms a par of Pape
Eferents Areas )0s and 9s pro>ec o ca$dae %ronoponine rac from area8 3oricoe'menal rac from area 9 Pro>ecions from areas ; ( 8- o e'menal reic$lar for maion and anerior ( &enral halamic formaion n$clei Intercortical connections connections %rono/occipial pro>ecion 4&is$al a'nosia6 %i!ers form areas 00/07 and area 89 pass o emporal lo!e
Functions of Prefrontal lobe: 3onnecions wih halam$s+ h"pohalam$s ( oher areas of core# 8. 3onrol of AS ). . 0.
*.
3onrol of personali" 3onrol of emoional a?ecs 3onrol of !eha&io$r ( social conscio$sness 5esponsi!le for resin' EEG
. Aleraions in social !eha&io$r 5emo&al of anerior cin'$lae '"r$s a!olished moral sense of ri'h or wron' Loss of sh"ness and fear 0. Impairmen of memor" *. Impairmen of learnin' and inellec$al f$ncions Electrical stimulation3han'es in a$onomic aci&i"
Lies !elow laeral s$lc$s Primar" a$dior" area/ Area area/ Area 08 A$dior" associaion area/ area/ Areas )-+)8+)) Fernic1es area/ area/ Area ))
Functions: 8. Percepion and processin' a$dior" si'nals ). Sense of e2$ili!ri$m in poserior par of s$perior emporal '"r$s . Lan'$a'e and memor" 0. Fernic1es area is associaed in inerpreaion and $ndersandin' of a$dior" ( &is$al si'nals
Klűver-Bucy syndrome 4!ilaeral emporal lo!ecom"6 8. O!edien+ h"perpha'ic 4omnipha'ia6 ( h"perse#$al ). Loss of fear <is$al a'nosia .
0. *.
Oral e#ploraion H"per/meamorphosis
Lies poserior o parieo occipial s$lc$s Areas 87+ 89+ 8; Primar" &is$al and &is$al associaion areas
For1s in close associaion wih h"pohalam$s 3oncerned wih emoions and memor"
OLEH Prof.H.Dr. GUSBAKTI
@'h or Ci'hJ aci&aed d$rin' emer'encies
e#ercise e# ercise aci&i" or &i'oro$s ph"sical re& $p he !od" o respond o si$aions+ s$ch as an'er or fear ha $pse homeosasis
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opposie e?ecs on is ar'e or'ans res or di'esJ red$ce ener'" $se promoes ◦
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he di'esion of food+ he sora'e of ener'"+ he eliminaion of wases 'eneral homeosasis
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The autonomic nervous system consists of sensory neurons and motor neurons that run betAeen the central nervous system especially the hypothalamus hypothalamus and and medulla oblongata oblongata and various internal organs such as the#
t is responsible for monitoring conditions in the internal environment and bringing about appropriate changes in them. The contraction of both smooth s mooth muscle and cardiac muscle is controlled by motor neurons of the autonomic system. The actions of the autonomic nervous system are largely involuntary involuntary in in contrast to those of the sensory-somatic system. t also differs from the sensory-somatic system is using tAo groups of motor neurons to stimulate the effectors instead of one. The first$ the preganglionic neurons$ neurons$ arise in the CNS and run to a ganglion in the body. 7ere they synapse Aith run to the effector organ cardiac muscle$ postganglionic neurons neurons$ $ Ahich smooth muscle$ or a gland. The autonomic nervous system has tAo subdivisions$ the sympathetic nervous system and system and the parasympathetic nervous system. system.
5espond onl" o norepinepherine released !" pos'an'lionic ne$rons 4precise 4precise e?ecs6 or
Epinepherine ( norepinepherine released !" adrenal adren al med$lla ino !lood 4'eneral e?ecs6
Alpha 1:o blood 1: In walls vessels leading to places other than seletal muscles! brain & lungs" Not on heart #cardiac muscle$ Alpha %: %: n membranes o platelets"