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Arm Musculature
Arm Musculature
56
Anatomy
Graduate
10/05/2010

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Term
Infraspinatus origin
Definition
infraspinatus fossa of scapula
Term
infraspinatus insertion
Definition
mid greater tuberosity of humerus
Term
infraspinatus innervation
Definition
suprascpaular
Term
infraspinatus vasculature
Definition
suprascapular and scapular circumflex
Term
infraspinatus main action
Definition
LR arm; helps to hold humeral head in glenoid cavity
Term
teres minor origin
Definition
superior lateral border of scapula
Term
teres minor insertion
Definition
inferior greater tuberosity of humerus
Term
teres minor innervation
Definition
axillary
Term
teres minor vasculature
Definition
scapular circumflex
Term
teres minor main action
Definition
laterally rotate arm; helps hold humeral head in glenoid cavity
Term
teres major origin
Definition
dorsal inf. angle of scapula
Term
teres major insertion
Definition
medial lip of intertubercular groove of humerus
Term
teres major innervation
Definition
lower subscapular
Term
teres major vasculature
Definition
thoracodorsal
Term
teres major main action
Definition
adduction and medially rotate arm
Term
subscapularis origin
Definition
subscapular fossa
Term
subscapularis insertion
Definition
lesser tuberosity of humerus
Term
subscapularis innervation
Definition
upper and lower subscapular
Term
subscapularis vaculature
Definition
subscapular
Term
subscapularis main action
Definition
medially rotate and adduct arm; helps to hold humeral head in glenoid cavity
Term
bicep origin
Definition
short head: tip of coracoid process and long head: supraglenoid tubercle
Term
bicep insertion
Definition
radial tuberosity and fascia of forearm via bicepital aponeuorosis
Term
bicep innervation
Definition
musculocutanous
Term
bicep vasculature
Definition
brachial
Term
bicep main action
Definition
flexes elbow; supinates forearm
Term
brachialis origin
Definition
distal 1/2 of anterior humerus
Term
brachialis insertion
Definition
coronoid process and ulnar tuberosity
Term
brachialis innervation
Definition
musculocutanous
Term
brachialis vasculature
Definition
brachial and radial recurrent
Term
brachialis main action
Definition
flexes elbow
Term
coracobrachialis origin
Definition
tip of coracoid process
Term
coracobrachialis insertion
Definition
mid. 1/3 of med. humerus
Term
coracobrachialis innervation
Definition
musculocutaneous
Term
coracobrachialis vasculature
Definition
brachial
Term
coracobrachialis main action
Definition
flexes and adducts arm
Term
tricep origin
Definition
long head:infraglenoid tubercle and lateral and medial heads: posterior humerus
Term
tricep insertion
Definition
olecranon and fascia of forearm
Term
tricep innervation
Definition
radial
Term
tricep vasculature
Definition
brachial and superior ulnar collateral and profunda brachii
Term
tricep main action
Definition
extend elbow
Term
anconeus origin
Definition
lateral epicondyle of humerus
Term
anconeus insertion
Definition
lateral olecranon and sup posterior ulna
Term
anconeus innervation
Definition
radial
Term
anconeus vasculature
Definition
mid. collateral from profunda brachii
Term
anconeus main action
Definition
assists triceps in ext. elbow
Term
deltoid origin
Definition
lateral 1/3 of clavicle, acromion, spine of scapula
Term
deltoid insertion
Definition
deltoid tuberosity of humerus
Term
deltoid innervation
Definition
axillary
Term
deltoid vasculature
Definition
post. humeral circumflex
Term
deltoid main action
Definition
ant: flex and MR arm; Mid: abducts arm; post: ext. and LR arm
Term
deltoid main action
Definition
ant: flex and MR arm; Mid: abducts arm; post: ext. and LR arm
Term
supraspinatus origin
Definition
suprapinatus fossa of scapula
Term
supraspinatus insertion
Definition
sup. greater tuberosity of humerus
Term
supraspinatus innervation
Definition
suprascapular
Term
supraspinatus vasculature
Definition
suprascapular
Term
supraspinatus main action
Definition
initiates and helps deltoid abd. arm
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