An easy way to learn shoulder muscles
-
Upload
christiane-riedinger -
Category
Education
-
view
11.971 -
download
15
description
Transcript of An easy way to learn shoulder muscles
C. Riedinger An easy way to learn musclesC. Riedinger An easy way to learn muscles
Muscles of the shoulder
bicepsbrachii
serratus anterior
pectoralis major
short head
long head
coracobrachialis
pectoralisminor
name meaning body part location / layer origin insertion nerve supply blood supply function
pectoralis major major chest muscle shoulder supericial
clavicular head: anterior surface of medial half of clavicle, sternocostal head: anterior surface of sternum, superior six costal cartilages, aponeurosis of the
external obliqe muscle
lateral lip of intertubercular groove of
humerus (long insertion)
lateral pectoral nerve
(lat. cord)
pectoral branch of thoracoacromial
trunk
adducts and medially rotates the humerus
pectoralis minor minor chest muscle shoulderdeep to pectoralis major
3rd to 5th ribs near their costal cartilages
medial border and superior surface of coracoid process of
scapula
medial pectoral nerve
(post. cord)
pectoral branch of thoracoacromial
trunk
stabilises scapula by drawing it against the
thoracic wall, horizontal adduction of
shoulder
serratus anteriormuscle that's notched like the edge of a saw
shoulder outer surface of upper 8 or 9 ribs (or more)
costal aspect of medial margin of scapula
long thoracic nerve
lateral thoracic artery,
thoracodorsal artery
protracts (=anterior movement of arms at shoulder) and stabilises
scapula
biceps brachii biceps of the arm arm anterior, superficial
long head: supraglenoid tubercle of scapula (through sleeve of synovial tissue in
intertubercular /bicipital groove of humerus, short head: coracoid process, joins long head midway down arm
via common tendon into the bicipical tuberosity of radius. Medial side:
via bicipital aponeurosis into deep fascia of medial forearm and subcutaneous border of ulna
musculocutaneous brachial artery
supinator of forearm when elbow is flexed, flexes elbow in fully supinated position.
Shoulder: stabilises and minor flexion
coracobrachialis muscle of the arm and coracoid process arm anterior,
deep
tip of coracoid process of scapula (with short head of biceps)
medial aspect midshaft of humerus musculocutaneous brachial artery
adducts shoulder (to hold things under arm), weak flexor of shoulder
joint
!"#$ #$"!%!& '()*+,"-./(0".%(!+1+
/"*$-(-%&%! %!2$-.%(! !$-3$+24,,/* '/(()+24,,/* 54!0.%(!
)$/.(%) !"#$%&'($")*'+,(- +./'(0-" +'1-"2#,#$(
$%!-"#/")3/"0-")$%0)
'11-")+'"2$,-)/2)($!-"$()
456)/2)0/"3%0/$7)
$,"/*#/%7)+1#%-)/2)
20",4/"
0-(!/#0)!'3-"/+#!8)/2)
64#$-42
$9#(($"8)%-":-1/+!-"#/")
,#",'*2(-9)
.'*-"$()$"!-"8
78+$30',!+);:-"!#,$()$%0)
./"#</%!$(=7)2(-9-+)$%0)
-9!-%0+)!.-)+./'(0-"
.$-$2+#"9(-*$#%)"/'%0-0)
*'+,(-+./'(0-"
1/+!-"#/")$+1-,!)/2)
#%2-"#/")$%&(-)/2)20",4/")
;+'1-"2#,#$()$+1-,!7)%/!)
,/+!$(=
*-0#$()(#1)/2)
#%!-"!'3-",'($")
+'(,'+>&"//:-)/2+
64#$-42
(/?-")+'3+,$1'($")
%-":-
;1/+!@),/"0=
+'3+,$1'($")$%0)
,#",'*2(-9)
+,$1'($")$"!-"#-+
#$)%"/+-(.".%(!)/2)
.'*-"'+7)-9!-%0+)
+./'(0-"
/".%22%#42+)(-2%&"-$!-+!)*'+,(-)/2)
3$,A+./'(0-" +'1-"2#,#$(
+1#%/'+)1"/,-++-+)/2)BCD
B4E7)!./"$,/('*3$")
2$+,#$7)#(#$,),"-+!)$%0)
#%2-"#/")6DF)"#3+7)#%2-"#/")
$%&(-)/2)+,$1'($
2(//")/2)#%!-"!'3-",'($")
&"//:-)/2)64#$-42
!./"$,/0/"+$()
%-":-
;1/+!@),/"0=
!./"$,/0/"+$()
3"$%,.)/2)!.-)
+'3+,$1'($")$"!-"8
$00',!+7)-9!-%0+)$%0)
*-0#$((8)"/!$!-+)!.-)
.'*-"'+
,$0.(-"/%2+#"9(- *$G/"),.-+!)*'+,(- +./'(0-" +'1-"#,#$(
,($:#,'($").-$0H)$%!-"#/")
+'"2$,-)/2)*-0#$().$(2)/2)
,($:#,(-7)+!-"%/,/+!$()
.-$0H)$%!-"#/")+'"2$,-)/2)
+!-"%'*7)+'1-"#/")+#9)
,/+!$(),$"!#($&-+7)
$1/%-'"/+#+)/2)!.-)
-9!-"%$()/3(#I-)*'+,(-
($!-"$()(#1)/2)
#%!-"!'3-",'($")&"//:-)/2)
64#$-42+;(/%&)
#%+-"!#/%=
($!-"$()1-,!/"$()
%-":-
;($!@),/"0=
1-,!/"$()3"$%,.)/2)
!./"$,/$,"/*#$()
!"'%A
$00',!+)$%0)*-0#$((8)
"/!$!-+)!.-).'*-"'+
!"#$ #$"!%!& '()*+,"-./(0".%(!+1+
/"*$-(-%&%! %!2$-.%(! !$-3$+24,,/* '/(()+24,,/* 54!0.%(!
24'20",4/"-%26!"#$%&'(%)*'+,&'
#$-."%-#,)"%/&0
24'20",4/"-+5(22"+
12$)#+-%'-#.&$+')3''
#$-."%-4
%&##&0'+"(&0$%&')3'
74#$-42
"..&0'-5/'%)*&0'
#"(#$-."%-0'5&06&
+0-5#6&0#&'$&067$-%'
-0+&089'#"(#$-."%-0'
-0+&08
!&/7-%%8'0)+-+&#'
,"!&0"#9'#+-(7%7#&#'
,"!&0"#'75'#,)"%/&0'
:)75+
24,-"2,%!".426!"#$%&'-()6&'+,&'
#.75&')3'+,&'#$-."%-#,)"%/&0 #".&037$7-%
#".0-#.75)"#'3)##-')3'
20",4/"
#".&07)0'3-$&+'12+7.4')3'
;0&-+&0'+"(&0$%&')3'
74#$-42
#".0-#$-."%-0'
5&06&
#".0-#$-."%-0'
-0+&08
-(/"$+#'1,)07<)5+-%49'
#+-(7%7#&#',"!&0"#'75'
#,)"%/&0':)75+
%!5-"2,%!".426!"#$%&'(&%)*'+,&'
#.75&')3'+,&'#$-."%-#,)"%/&0 #".&037$7-%
7530-#.75)"#'3)##-')3'
20",4/"
!7//%&'3-$&+')3';0&-+&0'
+"(&0$%&')3'74#$-42
#".0-#$-."%-0'
5&06&
#".0-#$-$"%-0'-5/'
$70$"!3%&='
#$-."%-0'-0+&07&#
%-+&0-%'0)+-+7)5')3'-0!9'
#+-(7%7#&#',"!&0"#'75'
#,)"%/&0':)75+
.$-$2+#%!(-6!75)0'0)"5/&/'
!"#$%&#,)"%/&0 %-+&0-%'()0/&0')3'20",4/"
753&07)0'3-$&+')3';0&-+&0'
+"(&0$%&')3'74#$-42-=7%%-08'5&06&
.)#+&07)0'
$70$"!3%&='
,"!&0-%'-0+&08'-5/'
$70$"!3%&='
#$-."%-0'-0+&08
/".$-"//*+-(.".$2'+,&'
-0!9'#+-(7%7#&#',"!&0"#'
75'#,)"%/&0':)75+
C. Riedinger An easy way to learn musclesC. Riedinger An easy way to learn muscles
Muscles of the shoulder (2)
teres major
serratus anterior
pectoralis major
infraspinatus*
deltoid
subscapularis*
subscapularis*
supraspinatus*
teres major
latissimusdorsi
teres minor*
(tricepsbrachii)
ROTATOR CUFF
OTHER muscles
Insertions of rotator cuff muscles: Insertions around bicipital / intertubercular groove:
(Right arm seem from post.)
(Right arm seem from ant.)
Bicipital groove: teres major medial to it latissimus dorsi in floor of it pectoralis major lateral to it bicipital tendon on top!
T
S
S
I
SS