Muscles of the Shoulder Region
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Created by:
akadrian777 Plus on June 10, 2012
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16 terms
Terms | Definitions |
|---|---|
 What are the 3 types of muscles in the shoulder joint? | 1) Humeral torque producers 2) Scapulothoracic 3) Rotator Cuff Muscles |
| What muscles make up the humeral torque producers? Axial skeleton => humerus: | pectoralis major(sternal head), lattisimus dorsi |
| What muscles make up the humeral torque producers? Shoulder girdle =>humerus: | pectoralis major(clavicular head) ,biceps brachaii, triceps brachaii, deltoid, teres major, coracobrachiallis |
| What muscles make up the scapulothoracic muscles? Axial skeleton=>shoulder girdle: | Trapeizius, rhomboid major & minor, levator scapulae, pectoralis minor, serratus anterior |
| What muscles make up the Rotator Cuff Muscles? | Supra & infraspinatus, teres minor and subscapularis |
| How do you remember what muscles attach to the intertubercular groove? | There once was a hoare named lattisimus who slept on the floor between 2 majors. The pectoralis brothers on the right and teres on the left. |
| Do all of the rotator cuff muscles (supra/infraspinatus, teres minor and subscapularis) attach to the greater tubercle of the humerus? | No, subscapularis(anterior subscapular fossa) attaches to the lesser tubercle |
| What's the difference between teres major and minor? | While Teres major was screwing lattisimus, teres minor joined the rotator cuffs to live on the greater tubercle |
| What is the difference between Lattisimus dorsi and teres major? | Lattisimus dorsi originates from S5-T6, illiac crest, inferior angle of scapula, ribs 9-12, while teres major originates from only the inferior angle of the scapula |
| What's the difference between pec majors heads? | Sternal: sternum and ribs 1-6 Clavicular: anteromedial clavicle |
| What is the difference between the biceps brachaii and coracobrachialis? | Biceps has a longer lateral head that attaches to the supraglenoid tubercule and both heads insert into the radial tuberosity of the radius not the humerus like the coracobrachialis |
| What separates the attachement sites supraspinous fossa and infraspinous fossa? | The spine of the scapula |
| Is the deltoid superficial to the Rotator cuff muscles? | Yes |
| What is the difference between Serratus anterior(ribs 1-8, deep) and pectoralis minor(ribs3-5, superficial)? | Serratus anterior attaches to the medial border and inferior angle of scapula, while pectoralis minor attaches to the coracoid process of scapula |
| What's the difference between levator scapulae, rhomboid minor and rhomboid major since they all connect to the medial border of the scapula? | Levator scapulae attaches to vertebrae C1-4, Rhomboid minor attacjes to vertebrae C7-T1 and rhomboid major attaches to vertebrae T2-T5 |
| Is the trapezius(Lateral 1/3 of clavicle, Acromion process, Medial End of spine of scapula) attach to the whole spine? | No, just C7-T12, ligamentum nochae and posterior skull |
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