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Ch 9 Shoulder Girdle
Clinical Kinesiology Chapter 9
| Question | Answer |
|---|---|
| The Shoulder Complex consists of: | The clavicle, scapula, and sternum |
| The Shoulder Joint consists of: | The scapula and the humerus |
| A term often used to discuss the activities of the scapula, clavicle, and (to a lesser degree) the sternum: | Shoulder Girdle |
| What are the joints of the shoulder girdle? | The acromioclavicular (AC) joint and the sternoclavicular (SC) joint |
| Name the motions available at the shoulder girdle: | 1) elevation and depression 2) protraction and retraction 3) upward and downward rotation |
| What are the 5 muscles that are responsible for SHOULDER GIRDLE movement? | 1) Trapezius 2) Levator Scapula 3) Rhomboids 4) Serratus Anterior 5) Pectoralis minor |
| The articulation between the humerus and scapula is called: | the glenohumeral joint |
| The _________ _________ is very mobile and has few ligaments. | glenohumeral joint |
| The _________ is only INDIRECTLY attached to the axial skeleton, via the clavicle. | scapula |
| What is the resting position of the scapula? | Between Ribs #2 and #7 (or #3 and #9). The vertebral border of the scapula should be 2-3" inches lateral to the spinous processes of the vertebrae. |
| When the scapula is in resting position, the spine of the scapula is approximately even with: | The spinous processes of T3 and T4 |
| The _________ ___________ is not a true joint; it is simply the spot where the concave scapula glides over the convex rib cage. There is no point of fixation. This allows for _________ and _________. | Scapulothoracic Articulation / motion / flexibility |
| What is the shoulder girdle's ONLY direct attachment with the trunk? | The sternoclavicular joint |
| What TYPE of joint is the sternoclavicular joint? | A synovial, plane-shaped joint |
| Movement of the sternoclavicular joint occurs in how many planes? | 3 planes |
| Motions that occur at the sternoclavicular joint: | 1) elevation and depression 2) protraction and retration 3) rotation |
| This shoulder girdle joint has 3 major ligaments and a joint disk that acts and 'double hinge': | sternoclavicular joint |
| This ligament REINFORCES THE JOINT CAPSULE of the sternoclavicular joint: | The Anterior and Posterior Sternoclavicular Ligament |
| This ligament LIMITS CLAVICULAR ELEVATION: | Costoclavicular Ligament |
| This ligament connects the sternal ends of the clavicles, LIMITING CLAVICULAR DEPRESSION: | Interclavicular Ligament |
| Connects acromion process with lateral clavicle: | Acromioclavicular joint |
| What type of joint is the acromioclavicular joint: | synovial plane-shaped |
| Motions at the acromioclavicular joint: | gliding motion that occurs in all 3 planes |
| What are the ligaments that support the Acromioclavicular joint? | 1) Acromioclavicular ligament 2) Coracoclavicular ligament (2 parts) 3) Coracoacromial ligament |
| The ligament that provides a protective "roof" over the head of the humerus: | Coracoacromial ligament |
| This reinforces the weak capsule of the acromioclavicular joint and prevents dislocation of the clavicle: | Acromioclavicular ligament |
| This ligament is not directly at the acromioclavicular joint, but it PREVENTS BACKWARD ROTATION OF SCAPULA and LIMITS ROTATION: | The Coracoclavicular ligament (2 parts: Trapezoid and Conoid |
| The lateral portion of the coracoclavicular ligament: | Trapezoid portion |
| The medial portion of the coracoclavicular ligament: | Conoid portion |
| This ligament provides support to the humeral head when an upward force is transmitted along the humerus: | Coracoacromial Ligament |
| This portion of the sternum attaches to the clavicle and first rib: | Manubrium |
| The ________ ________ acts as a shock absorber at the sternoclavicular joint. | articular disk |
| The 'double hinge' motion at the sternoclavicular joint is provided by movement between the ________ and the _________, by movement between the _________ and the ________. | the clavicle and the disk / the sternum and the disk |
| The ______ _______ at the sternoclavicular joint increases the size of the articular surface, which increases stability | articular disk |
| The articular disk blocks _______ _______ of the clavicle on to sternum. | medial movement |
Created by:
taranorwood