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10 Cards in this Set

  • Front
  • Back
Anterior deltoid
Origin
Insertion
Action
Innervation
Anterior deltoid
Origin: anterior lateral third of the of clavicle
Insertion: deltoid tuberosity on the lateral humerus
Action: flexion, abduction (assist), internal rotation (assist), horizontal adduction
Innervation: auxillary nerve C5, C6
Middle deltoid
Origin
Insertion
Action
Innervation
Middle deltoid
Origin: lateral aspect of the acromion
Insertion: deltoid tuberosity on the lateral humerus
Action: abduction, horizontal abduction
Innervation: auxillary nerve C5, C6
Posterior deltoid
Origin
Insertion
Action
Innervation
Posterior deltoid
Origin: inferior edge of the spine of the scapula
Insertion: deltoid tuberosity
Action: extension, lateral rotation
Innervation: axillary nerve C5, C6
Supraspinatus
Origin
Insertion
Action
Innervation
Supraspinatus
Origin: medial two-thirds of the supraspinatus fossa
Insertion: superiorly on the greater tubercle of the humerus
Action: abduction, horizontal abduction (assist)
Innervation: suprascapular nerve C5
Pectoralis major (clavicular)
Origin
Insertion
Action
Innervation
Pectoralis major (clavicular)
Origin: medial half of the anterior surface of the clavicle
Insertion: flat tendon 2 or 3 inches wide to the lateral lip of the intertubercular groove of the humerus
Action: flexion, abduction (assist), internal rotation (assist), horizontal adduction
Innervation: lateral pectoral nerve C5-C7
Pectoralis major (sternal)
Origin
Insertion
Action
Innervation
Pectoralis major (sternal)
Origin: anterior surfaces of the costal cartilage of the first six ribs, and adjacent portion of the sternum
Insertion: flat tendon 2 or 3 inches wide to the lateral lip of the intertubercular groove of the humerus
Action: extension, adduction, internal rotation (assist), horizontal adduction
Innervation: medial pectoral nerve C8, T1
Coracobrachialis
Origin
Insertion
Action
Innervation
Coracobrachialis
Origin: coracoid process of the scapula
Insertion: middle of the medial border of the humeral shaft
Action: flexion, adduction (assist), horizontal adduction
Innervation: musculocutaneous nerve C5-C7
Subscapularis
Origin
Insertion
Action
Innervation
Subscapularis
Origin: entire anterior surface of the subscapular fossa
Insertion: lesser tubercle of the humerus
Action: internal rotation
Innervation: upper and lower subscapular nerve C5, C6
Latissimus dorsi
Origin
Insertion
Action
Innervation

Teres Major
Origin
Insertion
Action
Innervation
Latissimus dorsi
Origin: posterior crest of the ilium, back of the sacrum, and spinous processes of the lumbar and T6-T12, slips from the lower three ribs
Insertion: medial lip of the intertubercular groove of the humerus, just anterior to the insertion of the teres major
Action: extension, adduction, internal rotation, horizontal abduction (assist)
Innervation: thoracodorsal nerve C6-C8

Teres Major
Origin: posteriorly on the inferior third of the lateral border of the scapula and just superior to the inferior angle
Insertion: medial lip of the intertubercular groove of the humerus just posterior to the insertion of the latissimus dorsi
Action: extension, adduction, internal rotation, horizontal abduction (assist)
Innervation: lower subscapular nerve (C5, C6)
Infraspinatus
Origin
Insertion
Action
Innervation

Teres minor
Origin
Insertion
Action
Innervation
Infraspinatus
Origin: medial aspect of the infraspinatus fossa just below the spine of the scapula
Insertion: posteriorly on the greater tubercle of the humerus
Action: external rotation, horizontal abduction
Innervation: suprascapular nerve C5, C6

Teres minor
Origin: posteriorly on the upper and middle aspect of the lateral border of the scapula
Insertion: posteriorly on the greater tubercle of the humerus
Action: external rotation, horizontal abduction
Innervation: axillary nerve C5, C6