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Gross
Superficial back and scapular mm
| Question | Answer |
|---|---|
| What muscles do superficial posterior axioappendicular msucles make | Trapezius and Latissimus dorsi |
| What are msucles of the extrinsic shoulder | Trapezius, Latissimus dorsi, Levator scapulae and rhomboid |
| What are deep posterior axioappendicular | lavator scapulae adn rhomboids |
| Orgin of Trapezius | mediala 3rd of supior nucal line, external occiptal protuberance, nucal ligament, and spinous processes of C7-T12 |
| Insertion of Trapezius | lateral 3rd of clavicle, acromion, and spine of scapula |
| Nerve supply of Trapezius | CN XI (motor fibers), and C3,C4 spinal nerves pain and proprioceptive fibers |
| What are C3 and C4 of Trapizus innervation | pain and proprioceptive fibers |
| Actions of Trapezius | (tilts chin and READ) Superior fibers elevates, Middle fibers retract scapula, Inferior fibers depress the scapula and lower the shoulder |
| Orgin of Latissimus dorsi | T7-T12, iliac crest, and inferior 3 or 4 ribs and thoracolumbar fascia |
| Insertion of Latissiumus dorsi | floor of bicipital groove of humerus |
| What is nerve supply of Latissiumus dorsi | Thoracodorsal nerve |
| Actions of Latissimus dorsi | Adducts, extends and medially rotates humerus |
| What raises body toward arms during climbing | latissimus dorsi |
| Orgin of Levator scapulae | posterior tubercules of transverse processes of C1-C4 |
| Insertion of Levator scapulae | medial border of scapula superior to root of spine |
| Nerve supply of Levator scapulae | Dorsal scpaular, and cervial nerves |
| Actions of levator scapulae | evelvates scapula, and rotates scapula, and tilts gleniod cavity inferioly |
| Orgin of rhomboid minor | C7 and T1 and nucal ligament |
| Insertion of rhomboid minor | meidal border of scapula at level of spine |
| Nerve supply of Rhomboid minor | dorsal scapular nerve |
| Actions of Rhomboid major and minor | adducts scapula, fix scapula to thoraic wall |
| Orgin of Rhomboid major | T2-T5 |
| Insertion of Rhomboid Major | medial border of scapcula from level of spine to inferior angle |
| What 3 all have Dorsal scpaular nerve supply? | Rhomboids (2), and Levator scapulae |
| Orgin of deltoid | lateral 3rd of clavice, acromino and spine of scapula |
| What muslce has same as Deltoid by is INSETION | Trapezius |
| Insertion of Deltoid | deltoid tuberosity of humerus |
| Nerve supply of Deltoid | Axillary nerve |
| Actions of deltoid | Anterior--flexes and medial roates arm, middle aBducts arm, and posterior extends and laterally rotates arm |
| WHat muscle is requires abduction of 1st 15 degress of humerus | supraspinatus |
| What muscles comprise the Intrinsic shoulder mm | Deltoid, Teres major, and Rotator cuff mm |
| What are Rotator cuff mm | SITS supraspinatis, infraspinatus, Teres minor, and subscapularis |
| Orgin of Teres major | posterior surface of inferior angle of scapula |
| Insertion of Teres major | medial lip of bicipital groove of humerus |
| Nerve supply of Teres major | Lower subscapular nerve |
| Actions of Teres major | adducts and medially rotates arm |
| Intersion for Lateral lip of bicipical groove of humerus, floor of biciipital, and medial lip, | Lateral Pec Major, Medial Teres Major, and Latimusdrosi--is Floor |
| Orgin of supraspinatus | supraspinous fossa of scapula |
| Interstion of supraspinatus | Superior facet of greater tubercule of humerus |
| Nerve supply of supraspinatus | suprascapular nerve |
| Actions of supraspinatus | intiaties and assits deltoid in ABduction, also acts w/ rotator cuff muscles |
| Orgin of infraspinatus | infraspinous fossa of scapcula |
| Insertion of infraspinatus | middle faucet of greatt tubercule of humerus |
| Nerve supply of infraspinatus | suprascapular nerve |
| Actions of infraspinatus | Laterally rotate arm |
| Orgin of Teres minor | middle part of lateral border of scapula |
| Insertion of Teres minor | interior facet of greater tubercule of humerus |
| Superior facet, Middle faucet, and INferior factets muscles | SIT |
| Nerve supply of Teres minor | axillary |
| Actios of Teres minor | same as Infraspinatus-laterally rotates help hold humeral head in glenoid cavity of scapula |
| Orgin of subscapularis | subscapular fossa |
| Insetion of Subscapularis | less tubercule of humerus |
| Nerve supply of subscpaularis | upper and lower subscapular nerves |
| Actions of subscpaularis | medially rotaes and ADDucts arms, help hold humeral head in glenoid cavity |
| What muscles make up anteiror axioappendicular | Pec major, and minor, subclavius, and serratus anterior |
Created by:
morgasms