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Musculature

Upper Trunk Muscles

QuestionAnswer
Trapezius - origin Occipital bone, spinous process/ thoracic vertebrae
Trapezius - insertion Clavicle, spine & acromiom/ scapula
Trapezius - action Elevates, depresses, retracts, adducts & rotates scapula & elevates clavicle
Levator Scapulae - origin Transverse processes/ cervical vertebrae
Levator Scapulae - insertion Medial vertebral border/ scapula
Levator Scapulae - action Elevates scapula
Rhomboideus Major - origin Spinous process/ T1- T5
Rhomboideus Major - insertion Inferior medial border/ scapula
Rhomboideus Major - action Adducts scapula, downward rotation of scapula
Rhomboideus Minor - origin Spinous process/ C7- T1
Rhomboideus Minor - insertion Superior medial border/ scapula
Rhomboideus Minor - action Adducts scapula, downward rotation of scapula
Supraspinatus - origin Supraspinous fossa/ Scapula
Supraspinatus - insertion Greater tubercle/ Humerus
Supraspinatus - action Abducts Humerus
Infraspinatus - origin Infraspinous fossa/ Scapula
Infraspinatus - insertion Greater tubercle/ Humerus
Infraspinatus - action Lateral rotation of Humerus
Teres Minor - origin Inferior lateral border/ Scapula
Teres Minor - insertion Greater tubercle/ Humerus
Teres Minor - action Lateral rotation of Humerus
Subscapularis - origin Subscapular fossa/ Scapula
Subscapularis - insertion Lesser tubercle/ Humerus
Subscapularis - action Medial rotation of Humerus
Teres Major - origin Inferior angle/ Scapula
Teres Major - insertion Intertubercular groove/ Humerus
Teres Major - action Extension, adduction & Medial rotation of Humerus
Deltoid - origin Clavicle, spine & acromium/ scapula
Deltoid - insertion Deltoid tuberosity/ humerus
Deltoid - action Abducts humerus
Latissimus Dorsi - origin Spinous process/ lower thoracic & all lumbar vertebrae
Latissimus Dorsi - insertion Intertubercular groove/ Humerus
Latissimus Dorsi - action Extension, adduction, & medial rotation of humerus
Erector Spinae Muscle Group (Illiocostalis, Longissimus, Spinalis) - action Extend vertebral column
Pectoralis Major - origin Sternum, clavicle & ribs 2-6
Pectoralis Major - insertion Intertubercular groove & greater tubercle/ Humerus
Pectoralis Major - action Adduction, medial rotation, flexion of Humerus
Pectoralis Minor - origin Ribs 3-5
Pectoralis Minor - insertion Coracoid process/ scapula
Pectoralis Minor - action Protraction & depression of scapula
Serratus Anterior - origin Ribs 1-9
Serratus Anterior - insertion Medial anterior border/ scapula
Serratus Anterior - action Protracts & rotate upward of scapula
External Intercostal - origin Inferior border of superior rib
External Intercostal - insertion Superior border of inferior ribs
External Intercostal - action Elevates ribs for inhalation
Internal Intercostal - origin Superior border of inferior ribs
Internal Intercostal - insertion Inferior border of superior ribs
Internal Intercostal - action Depresses ribs for exhalation
External Abdominal Oblique - origin Ribs 5-12
External Abdominal Oblique - insertion Iliac crest/ ilium
External Abdominal Oblique - action Laterally rotates vertebral column
Internal Abdominal Oblique - origin Iliac crest/ ilium
Internal Abdominal Oblique - insertion Pubis & ribs 8-12
Internal Abdominal Oblique - action Laterally rotates vertebral column
Rectus Abdominus - origin Pubis
Rectus Abdominus - insertion Xiphoid process & ribs 5-7
Rectus Abdominus - action Flexes vertebral column
Created by: mindhyper
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