| what are ligaments in sterrnoclavicular joint? | 1anterior and posterior sternoclavicular lig.
2-interclavicular lig.
3-costoclavicular lig. |
| what is the articulation of anterior and posterior sternoclavicular lig? | articulates each clavicle with upper part of manubrium |
| what is the articulation of costoclavicular lig? | links costal cartilage of the first rib with clavicle |
| what is the articulation of interclavicular lig? | links two clavicles with each other by upper surface of manubrium. |
| what is the type of sternoclavicular joint? | synovial suddle joint |
| what is the type of acromioclavicular joint? | synovial plane joint |
| what is the portions of acromioclavicular joint? | 1-distal part of clavicle
2-acromion process of scapula |
| Is acromioclavicular joit movable as sternoclavicular one? | no, it is also weak joint |
| what helps the movement of AC joint? | thick layer of cartilage called meniscus. |
| what are the ligaments of acromioclavicular joint? | 1-Acromioclavicular ligament
2-Coracoclavicular ligament. |
| what is the articulation of acromioclavicular ligaament? | it articulates clavicle to the acromion process of scapula |
| what is the divisions of coracoclavicular ligament? | 1-conoid ligament
2-trapezoid ligament |
| what is the articulation of coracoclavicular ligament? | it articulates clavicle with the coracoid process of scapula |
| What articulates the upper limb with the pectoral girdle? | The glenhumoural joint. |
| What is the articulation of glenohumeral joint(shoulder joint)? | it articulates head of humerus and glenoid cavity of scapula. |
| What is the type of shoulder joint? | Synovial ball and socket joint |
| What is the action of shoulder joint? | The most movable joint ,it acts as multi axial(adduction,abduction,external and internal rotation,circumduction) |
| what is the movement that scapula done by shoulder joint? | protraction, retraction, elevation, and depression |
| Why glenohumeral joint is unstable joint? | because the of huemerus is larger than glenoid cavity |
| What makes the stability of shoulder joint? | rotator cuff muscles, tendons, ligaments, and the Glenoid labrum. |
| What are the ligaments of glenohumeral joint? | 1-glenohumeral ligament(superior, middle inferior)
2-coracohumeral ligament
3-transverse hemeral ligament |
| What is the articulation of glenohumeral ligament? | articulates glenoid cavity with the head of humeras |
| What is the function of transvers ligament? | strengthens the capsule and bridges the gap between the two tuberosities in hemerus. |
| What is the function of coracohumeral joint and from where it extends? | strengthens the capsule above and stretches from the root of the coracoid process to the greater tuberosity of the humerus. |
| What is the glenoid labrum? | is a fibrocartilaginous rim attached around the margin of the glenoid cavity in the scapula. |
| what is the function of glenoid labrum? | It deepens the articular cavity and protects the edges of the bone. |
| What is the capsule that covers shoulder joint? | is a thin and lax structure surrounds the joint. |
| What is the articulation of capsule? | Medially to the margin of the glenoid cavity outside the labrum, laterally it is attached to the anatomic neck of the humerus |
| What is the function of capsule? | Allowing a wide range of movement for joint. |
| What strengths capsule? | fibrous slips from the tendons of the rotator cuff muscles. |
| what is the function of synovial membrane? | lines the capsule, attached to the margins of the cartilage covering the articular surfaces and it forms a tubular sheath around the tendon of the long head of the biceps brachii. |
| what is the extension of synovial membrane? | It extends through the anterior wall of the capsule to form the subscapularis bursa beneath the subscapularis muscle. |
