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Muscle Card 1-10
Rhomboid Major/Minor,Deltoid,Infraspinatus,Levator Scapulae
| Question | Answer |
|---|---|
| Rhomboid Major | Origin:Spinous processes of T2-T5 vertebrae Insertion:Medial border of Scapula Primary Action:Retracts scapula&rotates it to depress glenoid cavity. Innervation:Dorsal scapular nerve (C4,5) |
| Rhomboid Minor | Origin:Spinous processes of C7-T1 of vertebrae Insertion:Medial Border of Scapula Primary Action: Retracts&Rotates Scapula,fixes to Thoracic Wall Innervation:Dorsal scapular nerve C5 |
| Deltoid | Origin:Scapula&Clavicle Insertion:Deltoid tuberosity of humerus Primary Action:Abducts,Extends,&Flexes arm Innervation:Axillary Nerve (C5,6) |
| Infraspinatus | Origin:Infraspinatus fossa of the scapula Insertion:Greater tubercle of Humerus Primary Action:Lateral rotation of arm&stabilizes humerus Innervation:Suprascapular Nerve (C5,6) |
| Levator Scapulae | Origin:Transverse processes of C1-C4 Insertion:Vertebral border of scapula Primary Action:Elevates scapula&tilts its glenoid caviity. Innervation:Dorsal Scapular C5 & Cervical (C3,4) |