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53 Cards in this Set
- Front
- Back
Trapezius Muscle Insertion
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- Upper fibers: lateral 3rd of clavicle, acromion, spine of scapula
- Lower fibers: medial (tubercle) spine of scapula |
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Trapezius Muscle Origin
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- Superior Nuchal Line
- External Occipital Protuberance - Ligamentum nuchae - Spinous processes of CV7-TV12 |
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Trapezius Muscle Innervation
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- Accessory nerve (CN11/XI)
- C3 and C4 |
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Trapezius Muscle Action
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- Upper fibers: elevate shoulder
- Middle fibers: retract shoulder - Upper and lower fibers: rotate scapula for arm abduction |
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Trapezius Muscle Blood Supply
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- Transverse/superior cervical arteries
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Latissimus Dorsi Origin
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- Spinous processes of TV-7 down to back of sacrum (fuses to tendon of erector spinae muscles posterior to sacrum & posterior lamella of thoracolumbar fascia in lumbar region)
- Inferior angle of scapula - Iliac crest - Lower ribs |
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Latissimus Dorsi Insertion
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- Lesser tubercular ridge
- Intertubercular sulcus |
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Latissimus Dorsi Action
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- Extends humerus
- Adducts humerus - Medial rotation of humerus |
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Latissimus Dorsi Innervation
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- Thoracodorsal nerve
(runs with thoracodorsal vessels) |
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Latissimus Dorsi Blood Supply
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- Thoracodorsal vessels
(runs with thoracodorsal nerve) |
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Levator Scapulae Origin
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- Transverse processes of CV1-CV4
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Levator Scapulae Insertion
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- Vertebral border of scapula above spine of scapula
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Levator Scapulae Action
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- Elevates scapula
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Levator Scapulae Innervation
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- C3 & C4 of cervical plexus
- Dorsal scapular nerve |
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Levator Scapulae Blood Supply
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- Dorsal scapular vessels
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Rhomboideus Major Origin
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- Spinous process of CV7-TV4
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Rhomboideus Major Insertion
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- Verterbral border of scapula below spine of scapula
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Rhomboideus Major Action
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- Pulls scapulae toward each other, retracting the shoulder
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Rhomboideus Major Innervation
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- Dorsal scapular nerve
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Rhomboideus Major Blood Supply
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- Dorsal scapular vessels
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Rhomboideus Minor Origin
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- Ligamentum nuchae and spinous process of CV7
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Rhomboideus Minor Insertion
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- Vertebral border of scapula at the spine of scapula
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Rhomboideus Minor Action
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- Pulls scapulae toward each other, retracting the shoulder
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Rhomboideus Minor Innervation
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- Dorsal scapular nerve
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Rhomboideus Minor Blood Supply
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- Dorsal scapular vessels
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Serratus Posterior Superior/Inferior Origin
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- Spinous processes
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Serratus Posterior Superior/Inferior Insertion
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- Ribs
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Serratus Posterior Superior/Inferior Action
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- Inspiration
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Serratus Posterior Superior/Inferior Innervation
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- Intercostal nerves
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Serratus Posterior Superior/Inferior Blood Supply
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- Intercostal arteries
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Pectoralis Major Origin
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- Medial half of clavicle
- Costal cartilage of ribs 2-5 - Sternum - Upper rectus sheath |
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Pectoralis Major Insertion
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- Greater tubercular ridge of humerus
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Pectoralis Major Action
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- Adducts humerus
- Flex shoulder joint - Medially rotates humerus |
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Pectoralis Major Innervation
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- Lateral and medial pectoral nerves (same as breast)
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Pectoralis Major Blood Supply
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- Thoracoacromial trunk
- Lateral thoracic artery - Anterior perforating branches of internal thoracic artery - Perforating branches of intercostal arteries |
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Pectoralis Minor Origin
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- Ribs 2-4 or 3-5
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Pectoralis Minor Insertion
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- Coracoid process of scapula
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Pectoralis Minor Action
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- Depress shoulders
- Protract shoulders |
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Pectoralis Minor Innervation
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- Medial pectoral nerve
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Subclavius Origin
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- Junction of first rib to its costal ligament
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Subclavius Insertion
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- Groove on middle third of clavicle
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Subclavius Action
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- Depresses clavicle
- Stabilizes sternoclavicular joint |
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Subclavius Innervation
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- Upper trunk of brachial plexus (subclavian nerve)
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External Intercostal Origin
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- Inferior surface of upper rib
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External Intercostal Insertion
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- Superior surface of lower rib
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External Intercostal Action
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- Inspiration
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External Intercostal Innervation
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- T1-T11
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Internal Intercostal Origin
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- Superior surface of lower rib
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Internal Intercostal Insertion
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- Inferior surface of upper rib
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Internal Intercostal Action
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- Expiration
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Internal Intercostal Innervation
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- T1-T11
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Innermost Intercostal Action
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- Expiration
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Innermost Intercostal Innervation
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- T1-T11
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