A summary for learning the muscles of the shoulder including their attachments, innervation, etc., without having to have too many books open. Resources: "Grey’s anatomy", "Taschenatlas Anatomie", "McMinn’s Clinical Atlas of Human Anatomy" and Wikipedia. Awaiting further proof-reading!

1. C. Riedinger ­ An easy way to learn muscles
Muscles of the shoulder
location /
name meaning body part origin insertion nerve supply blood supply function
layer
clavicular head: anterior
surface of medial half of
clavicle, sternocostal lateral lip of
lateral pectoral pectoral branch of
head: anterior surface of intertubercular groove of adducts and medially
pectoralis major major chest muscle shoulder supericial nerve thoracoacromial
sternum, superior six humerus (long rotates the humerus
(lat. cord) trunk
costal cartilages, insertion)
aponeurosis of the
external obliqe muscle
stabilises scapula by
medial border and medial pectoral
deep to pectoral branch of drawing it against the
3rd to 5th ribs near superior surface of nerve
pectoralis minor minor chest muscle shoulder pectoralis thoracoacromial thoracic wall,
their costal cartilages coracoid process of (post. cord)
major trunk horizontal adduction of
scapula
shoulder
lateral thoracic protracts (=anterior
muscle that's
outer surface of upper 8 costal aspect of medial long thoracic artery, movement of arms at
serratus anterior notched like the shoulder
or 9 ribs (or more) margin of scapula nerve thoracodorsal shoulder) and stabilises
edge of a saw
artery scapula
long head: supraglenoid
via common tendon into
tubercle of scapula
the bicipical tuberosity supinator of forearm
(through sleeve of
of radius. Medial side: when elbow is flexed,
synovial tissue in
anterior, via bicipital flexes elbow in fully
biceps brachii biceps of the arm arm intertubercular /bicipital musculocutaneous brachial artery
superficial aponeurosis into deep supinated position.
groove of humerus,
fascia of medial forearm Shoulder: stabilises and
short head: coracoid
and subcutaneous minor flexion
process, joins long head
border of ulna
midway down arm
adducts shoulder (to
tip of coracoid process
muscle of the arm anterior, medial aspect mid­shaft hold things under arm),
coracobrachialis arm of scapula (with short musculocutaneous brachial artery
and coracoid process deep of humerus weak flexor of shoulder
head of biceps)
joint
long head
pectoralis
minor short
head
coraco­
brachialis
pectoralis biceps
major brachii
serratus anterior

2. C. Riedinger ­ An easy way to learn muscles
Muscles of the shoulder (2)
ROTATOR CUFF
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Insertions of rotator cuff muscles: Insertions around bicipital / intertubercular groove:
supraspinatus* S
S
infraspinatus* I subscapularis*
T
pectoralis
major
teres minor* deltoid teres major
latissimus
dorsi
teres major serratus anterior
(triceps
(Right arm seem from post.) S brachii)
Bicipital groove:
S ­ teres major medial to it
sub­ ­ latissimus dorsi in floor of it
scapularis* ­ pectoralis major lateral to it
(Right arm seem from ant.) ­ bicipital tendon on top!
OTHER muscles
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