Shoudler Girdle Flashcards
Give origin insertion and nerve for Trapezius
Origin: ext. occipital protuberance, medial portion of superior nuchal line of OP, ligament nuchea and spinous processes of C7- T12
Insertion: lateral one third of clavicle, acromion and spine of scapula.
N: Spinal portion of cranial nerve XI (accessory) and ventral ramus C2, 3, 4
Give action for descending(upper) trap fibers.
Upper fibers: bilaterally extend the head and neck
Unilaterally laterally flex the head and neck to the same side
Rotate the head and neck to opposite side
Elevate the scapula
Upwardly rotate the scapula
Give action for ascending (lower) trap fibers.
Scapular depression and upward rotation
Give action for middle trap fibers
Scapular retraction (adduct) / stabilize scapula
Name origin, insertion actions and nerve for deltoid
All: abduct the shoulder
Anterior: horizontally adduct, medially rotate and flex the shoulder
Posterior: horizontally abduct, laterally rotate and extend the shoulder
Origin: lateral 1/3 of clavicle, acromion and spine of scapula
Insertion: deltoid tuberosity
N: axillary C5,6
Give action for posterior deltoid fibers.
Extend shoulder
Laterally rotates shoulder
Horizontally abducts the shoulder
Give actions for middle deltoid fibers
Abducts shoulder
Give actions for anterior deltoid fibers
Shoulder abduction
flexion
Medial rotation
Horizontal adduction
Actions for supraspinatus and supraspinatus tendon
Shoulder abduction
Stabilizes head of humerus
Origin insertion and nerve for supraspinatus
O: SPF of the scapula
I: greater tubercle of humerus
N Suprascapular C4, 5, 6
Origin insertion and nerve for infraspinatus
O: infraspinatus fossa of scapula
I: greater tubercle of the humerus
N: Suprascapular C(4), 5, 6
Origin, insertion and nerve for Teres minor
O: 2 upper thirds of lateral border of scapula
I: greater tubercle if humerus
N: Axillary C5, 6
Origin insertion action and nerve for subscapularis
A: Medially rotate and stabilize head of humerous in glenoid cavity
O: sub-scapular fossa of the scapula
I: lesser tubercle if the humerus
N Upper and lower subscapular C5, 6, 7
Action for subscap
Medially rotates the shoulder and stabilized head of the humerus
Action for infraspinatus
Lateral rotation of shoulder
Adducts the shoulder
Stabilizes head of humerus in glenoid cavity
Names actions of Teres minor
Laterally rotates the shoulder
Adducts the shoulder
Stabilizes head of humerus glenoid cavity
Name origin, insertion action and nerve for latissimus dorsi
Action: shoulder extension, adduct shoulder and medially rotates
Origin: inferior angle of scapula, spinous processes of last six thoracic vert., last 3/4 ribs thoracolumbar fascia, and posterior iliac crest
I: inter-tubercular groove of the humerus
N Thoracodorsal C6, 7, 8
Give actions for Pectoralis major
all fibers: adduct /Medially rotate the shoulder
Upper fibers: flex the shoulder/ horizontally adduct
Lower fibers extend the shoulder
Actions for teres major and latissimus dorsi
(Shoulder)
Shoulder extension
Adduction
Medial rotation
Name origin insertion and n for teres major
O: inferior angle and lower 1/3 of lateral border of the scapula
I: crest of lesser tubercle of the humerus
N Lower subscapular C5, 6, 7
Give action, origin, insertion and nerve of Pectoralis minor
A: depresses scapula
Abducts the scapula
Downwardly rotates scapula
Assists to elevate the thorax during inhalation
O: third, forth and fifth ribs
I: medial surface of coracoid process of the scapula
N Medial pectoral, with fibers from a communicating branch of the lateral pectoral C(6), 7, 8, T1
Origin insertion and nerve for Pectoralis major
O: Medial half of clavicle, sternum , cartilage of first-sixth ribs
I: crest of greater tubercle of humerus
N Upper fibers: Lateral pectoral C5, 6, 7 Lower fibers: Lateral and medial pectoral C6, 7, 8, T1
Name origin, insertion, actions and n for subclavicus
A: elevate first rib during inhalation
Depress the clavicle and draw it anteriorly
Stabilize sternoclavicular joint
O: first rib/ cartilage
I: inferior surface of middle 1/3 of clavicle
N Subclavian C5, 6
Action, origin, insertion and nerve for Teres major
Actions: extend the shoulder, adduct/ medially rotate the shoulder
O: inferior angle and lower 1/3 of lateral border of scapula
I: crest of lesser tubercle
N Lower subscapular C5, 6, 7
