OIANS MUSCLES

• What is the insertion for the latissimus Doris muscles

  Floor of intertubercular sulcus of humerus
• What is the innervation of the latissimus Doris

  Thoracodorsal nerve (C6, C7, C8)
• What are the actions to the latissimus Doris

  Extends , adduction, medially rotates shoulder joints
• What is the origin of the latissimus Doris 


  Spinous process of inferior six thoracic vertebrae, iliac crest, thoracolumbar fascia
• What is the insertion of the trapezius

  Lateral third of clavicle, acromion, and spine of scapula
• What is the origin of the trapezius

  Medial third of superior nuchal line, external occipital protuberance, nuchal ligament
• What is the innervation of the trapezius

  Spinal accessory nerve CN X1, C3 and C4 spinal nerves
• What is the origin of the levator scapulae

  Posterior tubercles of transverse processes of C1-C4 vertebrae
• What is the insertion of the levator scapulae

  Medial border of scapula superior to root of the spine
• What is the innervation of the levator scapulae

  Dorsal scapular (C5) and cervical (C3, C4) spinal nerves
• What is the action of the levator scapulae

  Elevates scapular and rotates glenoid cavity inferiorly
• What is the rhomboid minor origin

  Nuchal ligament; spinous process of C7 and T1 vertebrae
• What is the action of the infraspinatus

  Lateral rotation / dynamic stability
• What is the action of the middle trapezius

  Retracts scapula, descending and ascending parts act together to rate glenoid cavity
• What is the action of the Subscapularis

  Medial rotation adducts shoulder joint and acts with other rotator cuff muscles
• What is the origin to the supraspinatus muscle

  Supraspinous fossa of scapula
• What is the origin for infraspinatus muscle

  Infraspinatus fossa of scapula
• What is the nerve in the infraspinatus

  Suprascapula nerve C5, C6
• What is the Pectoralis major origin in the clavicular head

  Anterior surface of medial half of clavicle
• What is the Pectoralis major origin in the sternocostal head

  Anterior surface of sternum, superior six costal cartilages, aponeourosis ext. oblique
• What is the insertion of the Pectoralis major

  Lateral lip of groove of humerus
• What is the innervation of the Pectoralis major

  Lateral and medial pectoral nerves, clavicular head (C5,C6) sternocostal head (C7,C8.T1)
• What is the action of the Pectoralis major 


  Adduct, Medially rotates, flexion, extension
• What is the origin of the Pectoralis minor

  3rd- 5th ribs near their costal cartilages
• What is the insertion of the Pectoralis minor

  Medial border/ superior surface of coracoid process of scapula
• What is the innervation of the Pectoralis minor

  Medial pectoral nerve (C8, T1) lateral pectoral nerve
• What is the origin of the Serratus anterior

  External surfaces of lateral parts of 1st - 8th ribs
• What is the insertion of the Serratus anterior

  Anterior surface of entire medial boarder of scapula
• What is the innervation of the Serratus anterior

  Long thoracic nerve ( C5, C6, C7)
• What is the action of Serratus anterior

  Protects scapula and holds it against thoracic wall; rotates scapula
• What is the origin of the deltoid

  Lateral third of clavicle; acromion and spine of scapula
• What is the insertion of the deltoid

  Deltoid tuberosity of humerus
• What is the innervation of deltoid

  Axillary nerve (C5, C6)
• What is the Teres minor origin

  Middle part of lateral border of scapula
• What is the insertion of the Teres minor

  Inferior facet of the greater tubercle of humerus
• What is the origin of the SCM

  Lateral surfaces of mastoid process of temporal bone and lateral half of superior nuchal
• What is the insertion of the SCM for sternal head

  Anterior surface of manubrium of sternum
• What is the insertion for the SCM clavicular head

  Superior surface of medial third of clavicle
• What is the innervation of the SCM

  Spinal accessory nerve (CN X1;motor), C2 and C3 nerves
• What is the action for unilateral contraction of SCM

  Tilts head to same side and rotates it so face is turned superiorly toward opposite side