toilet wall muscle o,i,a,ns
TRANSCRIPT
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MUSCLE ORIGIN INSERTION N/S ACTION
Trapezius Medial third of superiornuchal line; external
occipital protuberance;nuchal ligament; S.Ps ofC7 C12 ertebrae
!ateral third of claicle;acromion and spine of
scapula
"ccessor# nere $C%&'( and C)* C+ spinal
neres
,escending part eleates;ascending part depresses;
and middle part retractscapula; descending andascending parts act
together to rotate glenoidcait# superiorl#
Pectoralis Minor )rd-thribs near their costal
cartilageCoracoid Process Medial pectoral
%ere $C/* 01(Stabilies scapula b#draing it inferiorl#against thoracic all
Subclavius 3unction of 1strib and its
costal cartilage'nferior surface ofmiddle third of claicle
%ere to subclaius$C* C4(
"nchors and depressesclaicle
Levator Scapulae Posterior tubercles of 0.Ps
of C1 C+ ertebrae
Medial border of scapula
superior to root of spine
,orsal scapular $C(
and cerical $C)* C+(neres
5leates scapula and tilts
its glenoid cait#inferiorl# b# rotatingscapula
http://images.google.com.au/imgres?imgurl=http://www.fotosearch.com/comp/LIF/LIF125/3D507005.jpg&imgrefurl=http://www.fotosearch.com/LIF125/3d507005/&h=264&w=300&sz=24&hl=en&start=2&tbnid=7ngZPwlYgeF8_M:&tbnh=102&tbnw=116&prev=/images%3Fq%3Dsubclavius%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN -
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ROTATOR CUMUSCLE ORIGIN INSERTION N/S ACTION
Supraspinatus Supraspinous fossa ofscapula
Superior facet of greater
tubercle of humerus
Suprascapular nere
$C+* C* C4(
"bduction of arm and
helps hold the humeralhead 'n the glenoid cait#
of the scapula
In!raspinatus 'nfraspinous fossa ofscapula
Middle facet of greatertubercle of humerus
Suprascapular %ere$C* C4(
!aterall# rotates arm*6elps hold humeral head
in glenoid cait# ofscapula
Teres Minor Middle part of lateral borderof scapula
'nferior facet of greater
tubercle of humerus
"xillar# %ere
$C* C4(
!aterall# rotates arm*
6elps hold humeral headin glenoid cait# ofscapula
Subscapularis Subscapular fossa !esser tubercle ofhumerus
pper and !oer
Subscapular neres
$C* C4* C7(
Mediall# rotates and
adduct arm* helps hold
humeral head in theglenoid cait# of thescapula
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MUSCLE ORIGIN INSERTION N/S ACTION
Teres Ma"or Posterior surface of inferiorangle of scapula
Medial lip ofintertubercular grooe of
humerus8'C'P'0"! 9:
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R%o#boi$ Minor/
R%o#boi$ Ma"or
Rhomboid Minor:
%uchal ligament* S.Ps of C7
and 01 ertebraeRhomboid Major:
S.Ps of 02 0 ertebrae
Rhomboid Minor:
Smooth triangular area at
medial end of scapulaspineRhomboid Major:
Medial border of scapulafrom leel of spine to
inferior angle
,orsal scapular nere
$C+* C(
:etract scapula and rotate
it to depress glenoidcait#; fix scapula tothoracic all
&eltoi$ !ateral third of claicle;acromion and spine ofscapula
,eltoid tuberosit# ofhumerus
"xillar# nere$C* C4(
Anterior part:=lexes andmediall# rotates armMiddle part:abducts armPosterior part:extends
and laterall# rotates arm
Serratus Anterior 5xternal surfaces of lateralparts of 1st-/thribs
"nterior surface ofmedial border of scapula
!ong thoracic nere$C* C4* C7(
Protracts scapula andholds it against thoracicall* rotates scapula
MUSCLE ORIGIN INSERTION N/S ACTION
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'iceps 'rac%ii Short head:tip of coracoidprocess of scapulaLong head:Supraglenoidtubercle of scapula
0uberosit# of radius
fascia of forearm iabicipital aponeurosis
Musculocutaneous
nere $C* C4(
Supinates forearm and*
hen it is supine* flexesforearm; short head resistsdislocation of shoulder
'rac%ialis ,istal half of anteriorsurface of humerus
Coronoid process andtuberosit# of ulna
Musculocutaneousnere $C* C4(
=lexes forearm in allpositions
Coracobrac%ialis 0ip of coracoid process ofscapula
Middle third of medial
surface of humerus
Musculocutaneous
nere $C* C4* C7(
6elps flex and adduct
arm; resists dislocation ofshoulder
MUSCLE ORIGIN INSERTION N/S ACTION
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Anconeus !ateral epicond#le ofhumerus
!ateral surface of
olecranon and superiorpart of posterior surfaceof ulna
:adial nere
$C7* C/* 01(
"ssists triceps in
extending the forearm;stabilies elbo ?oint;ma# abduct ulna during
pronation
Triceps 'rac%ii Long Head:infraglenoidtubercle of scapulaLateral Head:posteriorsurface of humerus* superior
to radial grooeMedial Head:posteriorsurface of humerus* inferiorto radial grooe
Proximal end ofolecranon of ulna andfascia of forearm
:adial nere$C4* C7* C/(
Chief extensor of forearm;long head resistsdislocation of humerus;especiall# important
during abduction
OREARM LE(ORSMUSCLE ORIGIN INSERTION N/S ACTION
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Pronator
Teres
Medial epicond#le of
6umerus $common flexororigin( and coronoid processof ulna
Middle of conexit# of
lateral surface of radius
Median nere
$C4* C7(
Pronates and flexes
forearm $at elbo(
le)or
CarpiRa$ialis
Medial epicond#le of
humerus $common flexororigin(
8ase of 2ndmetacarpal Median nere
$C4* C7(
=lexes and abducts hand
$at rist(
Pal#aris
Lon*us
Medial epicond#le ofhumerus$common flexor origin(
,istal half of flexorretinaculum and apex of
palmer aponeurosis
Median nere$C7* C/(
=lexes hand $at rist( andtenses palmer aponeurosis
le)or
Carpi
Ulnaris
Medial epicond#le ofhumerus
$common flexor origin(
,istal half of flexorretinaculum and apex of
palmer aponeurosis
Median nere$C7* C/(
=lexes and adducts hand$at rist(
OREARM LE(ORSMUSCLE ORIGIN INSERTION N/S ACTION
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le)or
&i*itoru#
Super!icialis
Medial epicond#le $common
flexor origin and coronoidprocess(
Shafts $bodies( of middle
phalanges of medial fourfingers
Median %ere
$C7* C/* 01(
=lexes middle phalanges
at Proximal'nterphalangeal ?oints ofmiddle four fingers* alsoflexes phalanges at
metacarpophalangeal?oints
le)or&i*itoru#
Pro!un$us
Proximal three @uarters ofmedial and anterior surfaces
of ulna and interosseousmembrane
8ases of distal phalangesof +thand thfingers
lnar nere$C/* 01(
=lexes distal phalanges +and at distal
interphalangeal ?oints
le)or
Pollicis
Lon*us
"nterior surface of radius
and ad?acent interosseousmembrane
8ase of distal phalanx of
thumb
"nterior interosseous
nere* from mediannere$C/* 01(
=lexes phalanges of 1st
digit $thumb(
Pronator
+ua$ratus
,istal @uarter of anteriorsurface of ulna
,istal @uarter of anteriorsurface of radius
"nterior interosseousnere* from mediannere
$C/* 01(
Pronates forearm* bindsthe radius and ulnatogether.
OREARM E(TENSORSMUSCLE ORIGIN INSERTION N/S ACTION
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'rac%iora$ialis Proximal to thirds ofsupraepicond#lar ridge ofhumerus
!ateral surface of distal
end of radius proximal tost#loid process
:adial nere
$C* C4* C7(
:elatiel# eeA finger
flexion of forearm*maximal hen forearm isin midpronated position
E)tensor
Carpi
Ra$ialis
Lon*us
!ateral supraepicond#larridge of humerus
,orsal aspect of base of2ndmetacarpal
:adial nere$C4* C7(
5xtend and abduct handand rist ?oint; actieduring fist clenching
E)tensor
CarpiRa$ialis
'revis
!ateral epicond#le of
humerus $commonextensor origin(
,orsal aspect of base of
)rdmetacarpal
,eep branch of radial
nere$C7* C/(
5xtend and abduct hand
and rist ?oint
E)tensor
&i*itoru#
!ateral epicond#le ofhumerus $common
extensor origin(
5xtensor expansions ofmedial four fingers
Posteriorinterosseous nere
$C7* C/(
5xtends medial fourfingers primaril# at
metacarpophalangeal?oints* secondaril# at
interphalangeal ?oints.
OREARM E(TENSORSMUSCLE ORIGIN INSERTION N/S ACTION
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E)tensor
&i*iti
Mini#i
!ateral epicond#le of
humerus $common extensororigin(
5xtensor expansion of th
finger
Posterior
interosseous nere$C7* C/(
5xtends thfinger
primaril# atmetacarpophalangeal
?oint* secondaril# atinterphalangeal ?oints
E)tensor
Carpi
Ulnaris
!ateral epicond#le ofhumerus; posterior border of
ulna ia a sharedaponeurosis
,orsal aspect off base ofthmetacarpal
Posteriorinterosseous nere
$C7* C/(
5xtends and adducts handat rist ?oint $also actie
during rist flexion(
Supinator !ateral epicond#le ofhumerus; radial collateral
and anular ligaments;supinator fossa; crest of ulna
!ateral posterior* andanterior surfaces of
proximal third of radius
,eep branch of radialnere
$C7* C/(
Supinates forearm; rotatesradius to turn palm
anteriorl# or superiorl#
E)tensor
In$icis
Posterior surface of distalthird of ulna andinterosseous membrane
5xtensor expansion of2ndfinger
Posteriorinterosseous nere$C7* C/(
5xtends 2ndfinger$enabling its independentextension(; helps extend
the rist ?oint
OREARM E(TENSORSMUSCLE ORIGIN INSERTION N/S ACTION
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Ab$uctor
Pollicis
Lon*us
Posterior surface of proximal
hales of ulna* radius andinterosseous membrane
8ase of 1stmetacarpal Posterior
interosseous nere$C7* C/(
"bducts thumb and extends
it at carpometacarpal ?oint
E)tensorPollicis
Lon*us
Posterior surface of middlethird of ulna andinterosseous membrane
,orsal aspect of base ofdistal phalanx of thumb
Posteriorinterosseous nere$C7* C/(
5xtends distal phalanx ofthumb at interphalangeal
?oint; extendsmetacarpophalangeal and
carpometacarpal ?oints
E)tensor
Pollicis'revis
Posterior surface of distalthird of radius andinterosseous membrane
,orsal aspect of base ofproximal phalanx ofthumb
Posteriorinterosseous nere$C7* C/(
5xtends proximal phalanxof thumb atmetacarpophalangeal ?oint;extends carpometacarpal
?oint
T,ENAR MUSCLESMUSCLE ORIGIN INSERTION N/S ACTION
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Opponens
pollicis
=lexor retinaculum and
tubercles of scaphoid andtrapeium
!ateral side of 1st
metacarpal
:ecurrent branch of
median nere$C/* 01(
0o oppose thumb* it dras
1stmetacarpal mediall# tocentre of palm and rotates itmediall#
Ab$uctor
Pollicis
'revis
=lexor retinaculum andtubercles of scaphoid andtrapeium
!ateral side of base ofproximal phalanx ofthumb
:ecurrent branch ofmedian nere$C/* 01(
"bducts thumb; helpsoppose it
le)or
Pollicis'revis
=lexor retinaculum and
tubercles of scaphoid andtrapeium
!ateral side of base of
proximal phalanx ofthumb
:ecurrent branch of
median nere$C/* 01(
=lexes thumb
A$$uctor
Pollicis
Oblique Head:8ases of 2ndand )rdmetacarpals* capitate*
ad?acent carpalsransverse Head:"nteriorsurface of shaft of )rdmetacarpal
Medial side of base ofproximal phalanx of
thumb
,eep branch of ulnarnere
$C/* 01(
"dducts thumb toardlateral border of palm
,-POT,ENAR MUSCLESMUSCLE ORIGIN INSERTION N/S ACTION
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Ab$uctor
&i*iti
Mini#i
Pisiform Medial side of base of
proximal phalanx of thfinger
,eep branch of ulnar
nere$C/* 01(
"bducts thfinger* assists in
flexion of its proximalphalanx
le)or
&i*iti
Mini#i
'revis
6ooA of hamate and flexor
retinaculum
Medial side of base of
proximal phalanx of thfinger
,eep branch of ulnar
nere$C/* 01(
=lexes proximal phalanx of
thfinger
Opponens
&i*iti
Mini#i
6ooA of hamate and flexorretinaculum
Medial border of thmetacarpal
,eep branch of ulnarnere$C/* 01(
,ras thmetacarpalanterior and rotates it*
brings the thfinger intoopposition ith thumb
S,ORT MUSCLESMUSCLE ORIGIN INSERTION N/S ACTION
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Lu#brical
.st 0n$
!ateral to tendons of flexor
digitorum profundus
!ateral sides of extensor
expansions of 2nd-thfingers
Median %ere
$C/* 01(
=lex metacarpophalangeal
?oints; extendinterphalangeal ?oints of2nd-thfingers
Lu#brical
1r$ 2t%
Medial three tendons of
flexor digitorum profundus
!ateral sides of extensor
expansions of 2
nd
-
th
fingers
,eep branch of ulnar
nere$C/* 01(
=lex metacarpophalangeal
?oints; extendinterphalangeal ?oints of2nd-thfingers
&orsal
interossei
.st 3 2t%
"d?acent sides of tometacarpals
8ases of proximalphalanges; extensorexpansions of 2nd-+th
fingers
,eep branch of ulnarnere$C/* 01(
"bduct 2nd-+thfingers fromaxial line; act ithlumbricals in flexing
metacarpophalangeal ?oints
and extendinginterphalangeal ?oints
Pal#ar
interossei
.s t3 1r$
Palmar surfaces of 2nd* +thand thmetacarpals
8ases of proximalphalanges; extensor
expansions of 2nd* +thandthfingers
,eep branch of ulnarnere
$C/* 01(
"dduct 2nd* +thand thdigitstoard axial line and assist
lumbricals in flexingmetacarpophalangeal ?ointsand extendinginterphalangeal ?oints
SUPRA,-OI& MUSCLES
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MUSCLE ORIGIN INSERTION N/S ACTIONM4lo%4oi$ M#loh#oid line of mandible M#loh#oid raphe and
bod# of h#oid%ere to M#loh#oid* abranch of inferioraleolar nere $frommandibular nere* C%
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INRA,-OI& MUSCLESMUSCLE ORIGIN INSERTION N/S ACTION
Sterno%4oi$ Manubrium of sternum andmedial end of claicle
8od# of h#oid C1 C) b# branch ofansa cericalis
,epresses h#oid aftereleation during salloing
O#o%4oi$ Superior border of scapulanear suprascapular notch
'nferior border of h#oid C1 C) b# branch ofansa cericalis
,epresses* retracts* andsteadies h#oid
Sternot%4roi$ Posterior surface ofmanubrium of sternum
bli@ue line of th#roid
cartilage
C2 and C) b# branch
of ansa cericalis
,epresses h#oid and lar#nx
T%4ro%4oi$ bli@ue line of th#roidcartilage
'nferior border of bod#and greater horn of
h#oid
C1 ia h#poglossalnere $C% &''(
,epresses h#oid andeleates lar#nx
ANTERIOR 5ERTE'RAL MUSCLES
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MUSCLE ORIGIN INSERTION N/S ACTIONLon*us Coli "nterior tubercle of C1
ertebra $atlas(; bodies of C1 C) and 0.Ps of C) C4ertebrae
8odies of C 0)ertebrae; 0.Ps of C) C ertebrae
"nterior rami of C2 C4 spinal neres
=lexes necA ith rotation toopposite side if actingunilaterall#
Lon*us Capitis 8asilar part of occipital bone "nterior tubercles of C) C4 0.Ps
"nterior rami of C1 C) spinal neres
=lex head
Rectus Capitis
Anterior
8ase of SAull* ?ust anterior
to occipital cond#le
"nterior surface of
lateral mass of atlas$C1 ertebra(
8ranches from loop
beteen
=lex 6ead
Rectus Capitis
Lateralis
3ugular process of occipitalbone
0.Ps of atlas $C1( 8ranches from loopbeteen C1 and C2spinal neres
=lexes head and helpsstabilie
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LATERAL 5ERTE'RAL MUSCLES
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MUSCLE ORIGIN INSERTION N/S ACTIONSplenius Capitis 'nferior nuchal ligament and
S.Ps of superior 4 thoracicertebrae
!ateral aspect of mastoidprocess and lateral thirdof superior nuchal line
Posterior rami ofmiddle cerical spinalneres
!aterall# flexes and rotateshead and necA to same side>
bilaterall# extends head andnecA
Splenius Cervicis%uchal !igament and S.Psof C7 0) or 0+ ertebrae
0ubercles of 0.Ps of C1 C) or C+ ertebrae
Posterior rami ofspinal neres
!aterall# flexes and rotateshead and necA to same side>
bilaterall# extends head andnecA
Anterior Scalene 0.Ps of C+ C4 1strib Cerical spinal neres
C+ C4=lex 6ead
Mi$$le Scalene Posterior tubercles of 0.Psof C+ C4 ertebrae
Superior surface of 1strib; posterior grooe forsubclaian arter#
"nterior rami ofcerical spinal neres
=lexes necA laterall#;eleates 1strib during forcedinspiration
Posterior Scalene Posterior tubercles of 0.Psof C+ C4 ertebrae
5xternal border of 2ndrib "nterior rami of
cerical spinal neresC7 and C/
=lexes necA laterall#;
eleates 2ndrib duringforced inspiration
SU'OCCIPITAL MUSCLES
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MUSCLE ORIGIN INSERTION N/S ACTIONSuperior Obli6ue 0.P of C1 ccipital bone beteen
superior and inferiornuchal line
Suboccipital %ere
In!erior Obli6ue S.P of C2 0.P of C1 Suboccipital %ere
Rectus Capitis
Posterior Ma"or
S.P of C2 'nferior nuchal line of
occipital bone
Suboccipital %ere
C1
Rectus Capitis
Posterior Minor
Posterior tubercle of arch ofertebra o C1
'nferior nuchal line ofoccipital line
8ranch of Suboccipital%ere
:ectus CapitisPosterior Minor
:ectus Capitis
Posterior Ma?or
bli@ue Superior
bli@ue 'nferior
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MUSCLE ORIGIN INSERTION N/S ACTION
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Plat4s#a 'nferior border of mandible*sAin* and subcutaneoustissues of loer face
=ascia coering superior
parts of pectoralis ma?orand deltoid muscles
Cerical branch of
=acial nere$C% "nterior surface ofmanubrium of sternumClavicular Head:Superior surface of
medial third of claicle
Spinal "ccessor#nere $C% &'(;C2 and C) neres
"nilateral contraction:
0ilts head to same side androtates it so face is turnedsuperiorl# toard opposite side#ilateral contraction:
1. extends necA at " ?oints
2. flexes cerical ertebrae sothat chin approachesmanubrium). extends superior cerical
ertebrae hile flexing inferiorertebrae so chin is thrustforard ith head Aept leel
ACIAL MUSCLESMUSCLE ORIGIN INSERTION N/S ACTION
http://images.google.com.au/imgres?imgurl=http://www.atlantadentist.com/sternocleidomastoid.jpg&imgrefurl=http://www.atlantadentist.com/sternocleidomastoid.html&h=235&w=220&sz=39&hl=en&start=1&tbnid=eQ1P189JCA_ynM:&tbnh=109&tbnw=102&prev=/images%3Fq%3Dsternocleidomastoid%26gbv%3D2%26svnum%3D10%26hl%3Denhttp://images.google.com.au/imgres?imgurl=http://www.yorku.ca/earmstro/journey/images/platysma.jpeg&imgrefurl=http://www.yorku.ca/earmstro/journey/facial.html&h=266&w=212&sz=13&hl=en&start=6&tbnid=jUg0m5qfZFREGM:&tbnh=113&tbnw=90&prev=/images%3Fq%3Dplatysma%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN -
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Occipito!rontalis
rontal bell4
Occipital bell4
5picranial aponeurosis
!ateral to thirds of
superior nuchal line
SAin and subcutaneous
tissue of e#ebros andforehead
5picranial aponeurosis
C%
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ACIAL MUSCLESMUSCLE ORIGIN INSERTION N/S ACTION
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Te#poralis 0riangular muscle ithbroad attachment to floor oftemporal fossa and deepsurface of temporal fascia
%arro attachment to lip
and medial surface ofcoronoid process andanterior border of ramusof mandible
C%
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Iliocostalis.:
Lon*issi#us0:
Spinalis1:
"rises b# a broad tendon
from posterior part of iliaccrest* posterior surface ofsacrum* sacroiliacligaments* sacral and
inferior lumbar S.Ps* andsupraspinous ligament
!umboruum* thoracic *
cericis; fibres runsuperiorl# to angles ofloer ribs and cerical0.Ps
Posterior rami of
spinal neres
#ilaterall!:5xtend ertebral
column and head; as bacA isflexed* control moement
b# graduall# lengtheningtheir fibres"nilaterall!:!aterall# flexertebral column
"rises b# a broad tendonfrom posterior part of iliaccrest* posterior surface ofsacrum* sacroiliac
ligaments* sacral andinferior lumbar S.Ps* andsupraspinous ligament
0horacic * cericis*capitis; fibres runsuperiorl# to ribs
beteen tubercles and
angles to 0.Ps inthoracic and cericalregions* and to mastoid
process
Posterior rami ofspinal neres
#ilaterall!:5xtend ertebralcolumn and head; as bacA isflexed* control moement
b# graduall# lengthening
their fibres"nilaterall!:!aterall# flexertebral column
"rises b# a broad tendon
from posterior part of iliaccrest* posterior surface ofsacrum* sacroiliacligaments* sacral andinferior lumbar S.Ps* and
supraspinous ligament
0horacic* cericis*
capitis; fibres runsuperiorl# to S.Ps in theupper thoracic regionand to the cranium
Posterior rami of
spinal neres
#ilaterall!:5xtend ertebral
column and head; as bacA isflexed* control moement
b# graduall# lengtheningtheir fibres"nilaterall!:!aterall# flex
ertebral column
TRANS5ERSOSPINALIS MUSCLES
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MUSCLE ORIGIN INSERTION N/S ACTIONSe#ispinalis "rises from 0.Ps of C+
C12 ertebrae0horacic* cericis*capitis; fibres runsuperomediall# tooccipital bone and S.Ps
in thoracic and cerical
regions spanning + 4segments
Posterior rami ofspinal neres
5xtends head and thoracicand cerical regions ofertebral column and rotatesthem contralaterall#
Multi!i$us "rises from posteriorsacrum* posterior superioriliac spine of ilium*aponeurosis of erector
spinae* sacroiliac ligaments*
mamillar# processes oflumbar ertebrae* 0.Ps of01 0). articular processes
of C+ C7
0hicAest in lumbarregion; fibres passobli@uel#superomediall# to entire
length of S.Ps of
ertebrae * located 2 +segments superior toorigin
Posterior rami ofspinal neres
Stabilies ertebrae duringlocal moements ofertebral column
Rotatores "rise from 0.Ps ofertebrae; best deeloped in
thoracic region
=ibres passsuperomediall# to attach
to ?unction of lamina and0.Ps or S.Ps of ertebraimmediatel# $breis( or2 segments $!ongus(
superior to ertebra oforigin
Posterior rami ofspinal neres
Stabilie ertebrae andassist ith local extension
and rotator# moements ofertebral column; ma#function as organs of
proprioception
ANTEROLATERAL A'&OMINAL ;ALL MUSCLES
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MUSCLE ORIGIN INSERTION N/S ACTIONE)ternal
Obli6ue
5xternal Surfaces of ribs -12
!inea "lba* pubictubercle* anterior half ofiliac crest
'nferior 4 0horacicneres* and subcostalneres.
Compresses and supportsabdominal iscera* flexesand rotates trunA.
Internal
Obli6ue
0horacolumbar =ascia*anterior 2B) of iliac crest*lateral D of inguinal
ligament.
'nferior borders of 1Eth-12thribs* !inea "lba*con?oint tendon.
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MUSCLE ORIGIN INSERTION N/S ACTIONPsoas
Ma"or
0Ps of !umbar
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MUSCLE ORIGIN7sup8 INS 7in!8 N/S ACTION&iap%ra*# Sternal origins* costal
origins* ertebral origins*median arcuate ligament$aorta(* medial arcuate
ligament $psoas(* lateral
arcuate ligament $!(
=ibres runsuperomediall# toconerge and insert intoa central tendon
:F! Phrenic %eres$C)-+- Aeeps thediaphragm alie(
E)ternal
Intercostals
'nferior border of ribs Superior border of ribs 'ntercostal neres 5leates ribs during forcedinspiration.
Internal
Intercostals
'nferior border of ribs Superior border of ribs 'ntercostal neres 'nterosseous part depresses
ribs* interchondral parteleates ribs during actierespiration.
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Serratus Posterior
Superior
%uchal !igament* spinous
processes of C7-0)ertebrae
Superior borders of 2ndto
+thribs
2ndto thintercostal
neres
5leates ribs
Serratus Posterior
In!erior
Spinous Processes of 011-!2ertebrae
'nferior borders of /th-12th ribs near angles.
"nterior :ami of 0G-012 thoracic spinalneres
,epresses :ibs
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