Term
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Definition
O:Medial 1/3 of superior nuchal line; external occipital protuberance; Ligamentum Nuchae
I:Posterior border of lateral 1/3 of clavicle
Inn: Spinal part of Accessory nerve |
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Term
| Trapezius (Middle fibers) |
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Definition
O: Spinous process of C7
I: Acromion and upper border of spine of scapula
Inn: Accessory nerve
Action: Adduct scapula |
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Term
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Definition
O: Spinous process of T1-T12
I: Medial and Spine of scapula
Inn: Accessory Nerve
Action: Depress scapula |
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Term
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Definition
O: Spinous process of T7-T12; Lumbar Fascia to posterior 1/3 of iliac crest; ribs 10-12
I: Floor of intertubercular groove
Inn: Middle (thoracodorsal) subscapular nerve
Action: extends, adducts and medially rotates humerus |
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Term
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Definition
O: Transverse processes of C1-C3
I: Medial border of scapula superior to spine of scapula
Inn: Dorsal scapular nerve
Action: Elevates scapula; supports scapula; draws scapula medially and rotates it medially when scapula is fixed. Extends and laterally bends neck |
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Term
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Definition
O: Lower part of ligamentum nuchae; spinous processes of C7-T1; supraspinous ligament
I:Medial border of scapula at root of the spine.
Inn: Dorsal Scapular Nerve
Action: Elevates medial border and adducts scapula |
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Term
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Definition
O: Spinous Processes of T2-t5
I: Medial border of scapula inferior to spine
Inn: Dorsal Scapular Nerve
Action: Elevates medial border and adducts scapula. |
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Term
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Definition
O:(anterior fibers) Lateral 1/3 of anterior clavicle (Middle Fibers) Acromion (Posterior fibers) Lower lip of spine of scapula
I: Deltoid Tuberosity of humerus
Inn: Axillary Nerve
Action: (Ant fibers)flex and medially rotate humerus (Middle fibers) abduct humerus (Posterior Fibers) Extend and laterally rotates humerus |
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Term
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Definition
O: Supraspinous fossa
I: Superior facet of greater tuberosity; capsule of shoulder joint
Innervation: Suprascapular nerve
Action: Assists in abduction of humerus; Fixes head of humerus into glenoid fossa; Laterally rotates head of humerus |
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Term
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Definition
O: Infraspinous fossa
I: Middle facet of greater tuberosity of humerus; capsule of shoulder joint
Inn: Suprascapular nerve
Action: Lateral rotator of humerus' fixes head of humerus into glenoid fossa |
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Term
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Definition
O: Upper 2/3 of lateral border of scapula
I:Lower Facet of greater tuberosity of humerus; capsule of shoulder joint
Inn: Axillary Nerve
Action: Lateral rotator and weak adductor of humerus; fixes head of humerus into glenoid fossa |
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Term
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Definition
O: Lower 1/3 of lateral border of scapula
I: Medial lip of bicipital groove of humerus
Inn: Lower subscapular nerve
Action: Adducts, medially rotates and extends humerus |
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Term
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Definition
O: Subscapular Fossa
I: Lesser tuberosity of humerus; capsule of shoulder joint
Inn: Upper and ower subscapular nerves
Action: Medially rotates and adducts humerus; fixes head of humerus into glenoid fossa |
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Term
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Definition
O: Coracoid process of scapula
I: Medial surface of humerus proximal to middle of shaft
Inn: Musculocutaneous nerve
Action: Flexor and weak adductor of humerus. |
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