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Neck and trunk muscles OIAN

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Muscle
Origin - O
Insertion - I
Action - A
Nerve - N
Group/Location
Splenius Cervicis   Spinous processes of T3-T6   Transverse processes of C1-C3   show Middle & lower cervical nerves   Posterior  
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show Pubis   Xiphoid process & costal cartilages of 5th, 6th & 7th ribs   Trunk flexion; compression of abdomen   7th-12th intercostal nerves   Anterior  
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show Lower 8 ribs laterally   Iliac crest & linea alba   bilateral: trunk flexion; compression of abdomen / Unilateral: trunk lateral bending; rotation to opposite side   8th-12th intercostal, iliohypogastric & ilioinguinal nerves   Anterior  
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Interanl Oblique   Inguinal ligament, iliac crest, thoracolumbar fascia   10th, 11th & 12th ribs; abdominal aponeurosis   show 8th-12th intercostal, iliohypogastic & ilioinguinal nerves   Anterior  
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show Inguinal ligament, iliac crest, thoracolumbar fascia & last 6 ribs   Abdominal aponeurosis & linea alba   Compression of abdomen   7th-12th intercostal, iliohypogastric & ilioinguinal nerves   Anterior  
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Erector spinae (3)   show Spinous processes, transverse processes & posterior ribs from the occiput to the sacrum & ilium   Bilateral: extend / Unilateral: lateral bend   Spinal Nerves   Posterior, run parallel to vertebral column  
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Transversospinalis (3)   Transverse processes   show Bilateral: extend trunk / Unilateral: rotate trunk to opposite side   Spinal Nerves   Posterior  
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Interspinales   Spinous process below   Spinous process above   show Spinal Nerves   Posterior  
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Intertransversarii   Transverse process below   Transverse process above   show Spinal Nerves   Posterior  
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Quadratus lumborum   show 12th rib, transverse processes of all lumbar vertebrae   Trunk lateral bending   12th thoracic & 1st lumbar nerves   Lateral  
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show Posterior ribs from the occiput to the sacrum & ilium   Posterior ribs from the occiput to the sacrum & ilium   Extension & lateral bending   Spinal Nerves   Posterior, most lateral part of ES  
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Longissimus (ES)   Attach to the transverse processes from the occiput to the sacrum   Attach to the transverse processes from the occiput to the sacrum   Trunk extension & lateral bending   show Posterior, intermediate part of ES  
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Spinalis (ES)   Spinous processes of cervical & thoracic vertebrae & nuchal ligament   show Trunk Extension   Spinal Nerves   Posterior, most medial part of ES  
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Anterior Scalene   Transverse processes of C3-C6   show Neck lateral bending; assist in neck flexion   Lower cervical nerve   Deep to SCM  
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Middle Scalene   Transverse processes of C2-C7   Superior surface of the 1st rib   Neck lateral bending; assist in neck flexion   show Deep to SCM  
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Posterior Scalene   Transverse processes of C5-C7   2nd rib   Neck lateral bending; assist in neck flexion   show Deep to SCM; smallest & deepest  
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show Sternum & clavicle   Mastoid Process   Bilateral: flexes neck, hyperextends head / Unilateral: laterally bends the neck to the same side; rotates head to the opposite side   Accessory Nerve (crainal nerve XI); 2nd & 3rd cervical nerves   Anterior  
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Scalene (3)   Transverse processes of the cervical vertebrae   First & second ribs   Bilateral: assists in neck flexion / Unilateral: neck lateral bending   Lower cervical nerve   show
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Splenius Capitis   Lower half of nuchal ligament; spinous processes of C7-T3   Lateral occipital bone; mastoid process   show Middle & lower cervical nerves   Posterior  
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Created by: srussel
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