Term
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Definition
Origin:
-Medial 2/3 of clavicle
-Sternum
-Costal Cartilage 1-6
Insertion:
-intertubercular groove of humerus
Action:
-Adduction and Medial rotation of arm
-flexion and extension of arm
INNERVATION:
-Medial and Lateral pectoral nerves |
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Term
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Definition
ORIGIN:
-Ribs 3-6
INSERTION:
-coracoid process of scapula
ACTION:
-Depression of shoulder
-downward rotation of scapula
INNERVATION:
-medial pectoral nerve |
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Term
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Definition
Origin:
-sternum
-muscular head from clavicle
INSERTION:
-mastoid process of scull
ACTION:
-flexion of neck toward same side
INNERVATION:
-accessory nerve (cranial nerve XI) |
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Term
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Definition
ORIGIN:
-rib 1
INSERTION:
-inferior surface of clavicle
ACTION:
-possible depresses clavicle
-maintains sternoclavicular joint
INNERVATION:
-nerve to subclavius |
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Term
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Definition
ORIGIN:
-External occipital protuberance
-ligamentum nuchae
-spinous processes of C7 and all of thoracic vertebrae
INSERTION:
-spine of scapula
-lateral clavicle
-acromion
ACTION:
-elevation, retraction, and depression of scapula
-rotation of glenoid cavity upward
INNERVATION:
-accessory nerve (C3 and C4 sensory) |
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Term
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Definition
ORIGIN:
-spinous process of lower 6 T, and all of L and S vertebrae.
-post iliac crest
INSERTION:
-intertubercular groove of humerus
ACTION:
--extension, adduction, and medial rotation of arm
INNERVATION:
-thoracodorsal nerve |
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Term
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Definition
ORGIN:
-transverse process of upper 4 C vert
INSERTION:
-Sup ang and med border of scapula
ACTION:
-elevation of scapula
INNERVATION:
-C3 and C4
-dorsal scalpula nerve |
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Term
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Definition
ORIGIN:
-ligamentum nuchae
-spinous processes of C7 and T1
INSERTION:
Med border of Scapula
ACTION:
-elevation and retraction of scapula
-downward rotation of glenoid cavity
INNERVATION:
-dorsal scapular nerve |
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Term
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Definition
ORIGIN:
-spinous processes of T2 - T5
INSERTION:
-med border of scapula below rhomboid minor
ACTION:
-elevation and retraction of scapula
-downward rotation of glenoid cavity
INNERVATION:
-dorsal scapular nerve |
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Term
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Definition
ORIGIN:
-ribs 1-8 on thoracic wall
INSERTION:
-scapula
ACTION:
-protraction of scapula
-upward rotation of glenoid cavity
-holds medial border against thoracic wall
INNERVATION:
-Long thoracic nerve |
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Term
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Definition
ORIGIN:
-lateral third of clavicle
-acromion
-spine of scapula
INSERTION:
-deltoid tuberosity on shaft of humerus
ACTION:
abduction (middle head)
-flexion and medial rotation (anterior fibers)
-extension and lat rotation (posterior head)
INNERVATION:
-axillary nerve |
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Term
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Definition
ORIGIN:
-supraspinous fossa of scapula
INSERTION:
-greater tubercle of humerus
ACTION:
-abduction of arm
INNERVATION:
-suprascapular nerve |
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Term
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Definition
ORIGIN:
-infraspinous fossa of scapula
INSERTION:
-greater tubercle of humerus below supraspinatus
ACTION:
-lateral rotation of arm
INNERVATION:
-SUPRASCAPULAR NERVE |
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Term
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Definition
ORIGIN:
-upper 2/3 of lateral border of SCAPULA
INSERTION:
-greater tubercle of humerus below infraspinatus
ACTION:
-lateral rotation of arm
INNERVATIOIN:
-axillary nerve |
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Term
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Definition
ORIGIN:
-medial lip of intertubercular groove of humerus
ACTION:
-adduction
-medial rotational
-extension of arm
INNERVATION:
-lower subscapular nerve |
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Term
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Definition
Origin:
-subscapular fossa of scapula
INSERTION:
-lesser tubercle and crest of humerus
ACTION:
-medial rotation of arm
INNERVAITON:
-upper and lower subscapular nerve |
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