Proximal, Distal, Innervation, Action Flashcards
pectoralis major proximal attachment
medial clavicle, sternum, and superior ribs
pectoralis major distal attachment
greater tubercle of humerus
pectoralis major innervation
medial pectoral and lateral pectoral (C5, 6, 7, 8, T1)
pectoralis major action
FL, ADD, IR (from a fully FL position, it will be EX back)
pectoralis minor proximal attachment
ribs 3-5
pectoralis minor distal attachment
coracoid process of the scapula
pectoralis minor innervation
medial pectoral nerve (C8, T1)
pectoralis minor action
protraction, depression, rotate to depress
subclavius proximal attachment
1st rib
subclavius distal attachment
inferior surface of middle cllavicle
subclavius innervation
nerve to subclavius (C5, 6)
subclavius action
anchors and depresses clavicle, depresses scapula
serratus anterior proximal attachment
lateral superior ribs
serratus anterior distal attachment
medial border of the scapula
serratus anterior innervation
long thoracic nerve (C5, 6, 7)
serratus anterior action
protraction, depression, rotate to depress
trapezius proximal attachment
occipital protuberance, spinous processes of C7-T12
trapezius distal attachment
lateral clavicle, acromion, spine of scapula
trapezius innervation
cranial nerve XI
trapezius action
Scapula
Upper: elevation, retraction, rotate to elevate
Lower: depression, retraction, rotate to elevate
Neck
Both: EX
One side: ABD, ADD, rotation
latissumus dorsi proximal attachment
lower thoracic and lumbar vertebra, posterior pelvis
latissumus dorsi distal attachment
lesser tubercle
latissumus dorsi innervation
thoracodorsal (C6, 7, 8)
latissumus dorsi action
EX, ADD, IR
levator scapulae proximal attachment
upper cervical vertebrae
levator scapulae distal attachment
superior medial scapula
levator scapulae innervation
dorsal scapular (C3, 4, 5)
levator scapulae action
Scapula: elevation, retraction, rotate to depress Neck: Both: EX One side: ABD, ADD, rotation
rhomboids proximal attachment
lower cervical and upper thoracic vertebrae
rhomboids distal attachment
medial border of the scapulae
rhomboids innervation
dorsal scapular (C4, 5)
rhomboids action
retraction, elevation, rotate to depress
deltoid proximal attachment
Lateral clavicle, acromion, spine of scapula
deltoid distal attachment
Deltoid tuberosity of humerus
deltoid innervation
Axillary (C5,6)
deltoid action
Anterior: FL, IR
Middle: ABD
Posterior: EX, ER
(will ADD when inferior to the GH joint)
supraspinatus proximal attachment
Supraspinatus fossa of the scapula
supraspinatus distal attachment
Greater tubercle of the humerus
supraspinatus innervation
Suprascapular (C4,5,6)
supraspinatus action
Stabilizes the glenohumeral joint, ABD
infraspinatus proximal attachment
Infraspinatus fossa of the scapula
infraspinatus distal attachment
Greater tubercle of the humerus
infraspinatus innervation
Suprascapular (C5,6)
infraspinatus action
Stabilizes the glenohumeral joint, ER
teres minor proximal attachment
Lateral border of the scapula
teres minor distal attachment
Greater tubercle of the humerus
teres minor innervation
Axillary (C5,6)
teres minor action
Stabilizes the glenohumeral joint, ER
teres major proximal attachment
Inferior angle of the scapula
teres major distal attachment
Lesser tubercle of the humerus
teres major innervation
Lower subscapular (C5,6)
teres major action
ADD, IR
subscapularis proximal attachment
Subscapularis fossa of the scapula
subscapularis distal attachment
Lesser tubercle of the humerus
subscapularis innervation
Upper and lower subscapular (C5,6,7)
subscapularis action
Stabilizes the glenohumeral joint, IR
biceps brachii proximal attachment
Coracoid process of the scapula, supraglenoid tubercle of the scapula
biceps brachii distal attachment
Tuberosity of the radius and bicipital aponeurosis
biceps brachii innervation
Musculocutaneous (C5,6,7)
biceps brachii action
Radioulnar: supination
Elbow: FL
GH: FL, ABD
coracobrachialis proximal attachment
Coracoid process of the scapula
coracobrachialis distal attachment
Midshaft of humerus
coracobrachialis innervation
Musculocutaneous (C5,6,7)
coracobrachialis action
GH: FL, ADD, IR
triceps brachii proximal attachment
Infraglenoid tubercle of the scapula, posterior humerus superior to the radial groove, posterior humerus inferior to radial groove
triceps brachii distal attachment
Olecranon of ulna
triceps brachii innervation
Radial (C6,7,8)
triceps brachii action
Elbow EX
GH: EX, resists dislocation
anconeus proximal attachment
Lateral epicondyle of humerus
anconeus distal attachment
Lateral olecranon
anconeus innervation
Radial (C8, T1)
anconeus action
Assists triceps in EX, stabilizes elbow
pronator teres proximal attachment
Medial epicondyle of humerus, coronoid process of ulna
pronator teres distal attachment
Middle of radius
pronator teres innervation
Median (C6,7)