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Shoulder girdl
Question | Answer |
---|---|
What muscles work synergistically with extension? | latissimus dorsi, posterior deltoid, teres major, pectoralis major |
What is Scapulohumeral rhythm? | a concept that further describes the movement relationship between the shoulder girdle and shoulder joint. |
What muscles work together to make downward rotation of the Scapula? | Levator Scapula, Rhomboids, and Pectoralis minor |
What makes up the Shoulder Complex? | Scapula, Clavicle, Sternum, Humerus, and Rib Cage |
Describe the Sternoclavicular Legament and what it does. | It provides the shoulder girdle with it's only direct attachment to the trunk. It's a synovial joint and has a double gliding motion. |
Where is the Scapula located anatomically? | Between the second and seventh ribs, with the vertebral border approximately two to three inches lateral from the spinous processes of the vertebrae. |
What nerve innervates the Upper trap? | Spinal Accessory (cranial nerve XI) C3 and C4 sensory component. |
What nerve innervates the Levator Scapula? | Third and Fourth cervical nerves and dorsal scapular nerve C5 |
What nerve innervates the Rhomboid Muscles? | Dorsal Scapular nerve C5 |
What nerve innervates the Serratus Anterior? | Long Thoracic nerve C5, C6, C7 |
What nerve innervates the Pectoralis minor muscle? | Medial pectoral nerve C8, T1 |
Define force Couple | muscles pulling in different directions to accomplish the same motion. |
What muscle works synergistically with the Latissimus Dorsi? | Teres Major |
What ligament provides a protective roof ? | Coracoacromial Ligament |
What muscles make up the rotator cuff? | Subscapularis, supraspinatus, infraspinatus, and teres minor |
Define the rotator cuff | A tendinous band formed by various muscles that help to keep the head of the humerus "rotating" against the glenoid fossa during joint motion. |