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23 Cards in this Set
- Front
- Back
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Quadratus Lumborum
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Origin: Posterior inner lip of iliac crest Insertion: One half length of lower border of 12th rib and transverse processes of upper 4 lumbar vertabrae Action: Side flexion, stabilises spine and pelvis |
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Latissimus dorsi
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Origin: Posterior crest of ilium, back of sacrum, spinous processes of lumbar and lower 6 thoracic vertebrae, lower 3 ribs Insertion: Medial side of interbercular groove of humerus Action: Adduction, extension, internal rotation, horizontal abduction of GH joint |
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Erector Spinae
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Origin: Sacrum, posterior ribs, vertebrae (lumbar thoracic and cervical) and posterior neck ligaments Insertion: Posterior ribs, cervical and thoracic and cervical and posterior neck ligaments Action: Spinal and neck extension, lateral flexion and rotation |
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Rectus Abdominus
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Origin: Crest of pubis Insertion: Cartilage of ribs 5-7 and xiphoid process Action: Lumbar flexion |
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External Obliques
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Origin: Borders of lower 8 ribs at side of chest, dovetailing with serratus anterior insertion: Anterior half of crest of ilium, inguinal ligament, crest of pubis, facia of rectus abdominis at lower front Action: (Both: Lumbar flexion) (One side: lateral flexion and rotation to opposite side) |
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Internal Obliques
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Origin: Upper half of inguinal ligament; anterior two thirds of iliac crest and lumbar fascia Insertion: Costal cartilages of ribs 8-10 and linea alba Action: Lumbar flexion; lumbar side flexion; lumbar rotation |
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Transverse Abdominus
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Origin: Outer 3rd of inguinal ligament, inner rim of iliac crest, cartilage of lower 6 ribs and lumbar fascia Insertion: Crest of pubis and iliopectineal line, abdominal aponeurosis to linea alba Action: Compresses Abdomen (Vital in core stability) |
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Rhomboids Major
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Origin: Spinous processes (T2-5) supraspinous ligament Insertion: Medial border of scapula below spine Action: Adducts (retracts) and draws scapula toward spinal column. Elevates medial border of scapula rotating scapula downwards |
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Rhomboids Minor
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Origin: Spinous processes (C7-T1) thoracic vertebrae and supraspinous ligament Insertion: Medial border of scapula below spine Action: Adducts (retracts) and draws scapula towards spinal column. Elevates medial border of scapula to depress lateral angle |
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Levator Scapulae
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Origin: Transverse processes of the upper 4 cervical vertebrae Insertion: medial border of the scapula above the base of the scapula spine Action: Elevates the medial margin of the scapula |
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Upper Trapezius
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Origin: Base of skull, occipital tuberance, posterior ligaments of neck Insertion: Posterior aspect of lateral 3rd of clavicle Action: Elevation of scapula, head extension |
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Middle Trapezius
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Origin: Spinous process C7-T3 Insertion: Acromion process and superior border of spine of scapula Action: Adduction, elevation and upward rotation of scapula |
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Lower Trapezius
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Origin: Spinous processes T4-T12 Insertion: Posterior aspect of lateral 3rd of scapula Action: Adduction, depression and upper rotation of scapula. Weak thoracic spinal extension |
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Infraspinatus
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Origin: Medial aspect of the infraspinatus fossa just below spine of scapula Insertion: Posterior aspect on greater tubercle of humerus Action: External rotation/ horizontal abduction/ extension of shoulder. Stabilises humeral head within glenoid cavity |
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Supraspinatus
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Origin: Medial 2/3rds of supraspinatus fossa Insertion: Superior aspect of greater tubercle of humerus Insertion: Superior aspect of greater tubercle of humerus Action: Weak abduction and stabilisation of humeral head in glenoid cavity |
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Subscapularis
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Origin: Entire anterior surface of subscapular fossa Insertion: Lesser anterior tubercle of humerus Action: Internal rotation/adduction and extension of shoulder stabilises humeral head within glenoid cavity |
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Teres Minor
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Origin: Posteriorly on upper and middle aspects of lateral border of scapula insertion: Posterior aspect on greater tubercle of humerus Action: External rotation/horizontal abduction/extension of shoulder. Stabilises humeral head within glenoid cavity |
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Sternocleidomastoid
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Origin: Manubrium of sternum medial clavicle Insertion: Mastoid process Action: (Both sides) flexion (individually) rotation to opposite side and lateral flexion to same side |
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Scalenes
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Origin: Transverse processes of C1-C6 Insertion: Upper surfaces of 1st and 2nd ribs Action: Raises 1st and 2nd ribs, flexes and rotates neck |
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Pectoralis Major
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Origin: Medial half of anterior clavicle sternum and adjoining intercostal cartilages of 1st 6 ribs Insertion: Outer lip of intertubercular groove of humerus Action: Internal rotation, horizontal adduction, flexion, extension assists with abduction beyond 90 |
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Pectoralis Minor
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Origin: Anterior surfaces of 3rd to 5th ribs Insertion: Coracoid process of scapula Action: Protraction, depression, downward rotation of scapula |
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Teres Major
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Origin: Inferior 3rd of lateral border of scapula Insertion: Medial tip of bicipital groove of groove of humerus Action: Extends shoulder, internal rotation; assists in adduction and medial rotation of arm |
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Serratus Anterior
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Origin: Ribs 1-9 at side of chest Insertion: Anterior surface of medial border of scapula Action: Abducts (protracts) scapula; rotates scapula upwards. Stabilises scapula when hand exerts pressure on an object i.e. press ups |
