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Shoulder Girdle

TermDefinition
Upper Trapezius- Origin Occipital bone, nuchal ligament on upper cervical spinous processes
Upper Trapezius- Insertion Lateral 1/3 of clavicle; medial aspect of acromion process of scapula
Upper Trapezius- Nerve innervation Spinal accessory nerve (cranial nerve XI); C3-C4 sensory component
Upper Trapezius- Action *Scapular elevation *Upward rotation
Middle Trapezius- Origin Spinous processes of C7-T3
Middle Trapezius- Insertion Scapular spine
Middle Trapezius- Nerve Innervation Spinal accessory nerve (cranial nerve XI); C3-C4 sensory component
Middle Trapezius- Action Scapular retraction
Lower Trapezius- Origin Spinous processes of middle & lower thoracic vertebrae
Lower Trapezius- Insertion Base of scapular spine
Lower Trapezius- Nerve innervation Spinal accessory nerve (cranial nerve XI); C3 & C4 sensory component
Lower Trapezius- Action *Scapular depression & upward rotation
Levator Scapula- Origin Transverse processes of C1-C4
Levator Scapula- Insertion Superior part of vertebral border of scapula
Levator Scapula- Nerve Innervation C3, C4, & dorsal scapular nerve (C5)
Levator Scapula- Action *Scapular elevation *Downward rotation
Rhomboid- Origin Major: Spinous processes of T2- T5 Minor: Ligamentum nuchae & spinous processes of C7 & T1
Rhomboid- Insertion Major: Vertebral border of scapula from inferior to scapular spine to inferior angle Minor: Vertebral border of scapula; adjacent to scapular spine
Rhomboid- Nerve Innervation Dorsal scapular nerve (C5)
Rhomboid- Action *Scapular retraction, elevation, & downward rotation
Serratus Anterior- Origin Lateral surface of upper 8 ribs
Serratus Anterior- Insertion Anterior surface of vertebral border of scapula
Serratus Anterior- Nerve Innervation Long thoracic nerve (C5,6,7)
Serratus Anterior- Action *Scapular protraction & upward rotation
Pectoralis- Origin Anterior surface of 3rd -5th ribs
Pectoralis- Insertion Coracoid process of scapula
Pectoralis- Nerve Innervation Medial pectoral nerve (C8, T1
Pectoralis- Action *Scapular depression *Protraction *Downward rotation Anterior tilt of scapula
Created by: jello-cup
 

 



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