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11 Cards in this Set
- Front
- Back
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Splenius capitis and cervicis
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Origin: Ligamentum nuchae, T1-T4 spinous processes Insertion: Capitis- Mastoid process and superior nuchael line Cervicis- C1-C4 transverse processes Actions: Unilateral: lateral flexion and ipsilateral rotation of head/neck Bilateral: extension of head/neck |
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Erector spinae (lateral) Iliocostalis |
Origin: Common tendon from posterior iliac crest, dorsal sacrum, and lumbar spinous processes Insertion: angles of ribs (lumborum and thoracis) and cervical transverse processes (cervicis) Actions: Unilateral: lateral flexion and ipsilateral rotation of trunk and head/neck. Bilateral: Extension of trunk and head/neck |
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Erector spinae (intermediate) Longissimus |
Origin:Common tendon from posterior iliac crest, dorsal sacrum, and lumbar spinous processes Insertion:thoracic transverse processes and adjacent ribs (thoracis), cervical transverse processes (cervicis), mastoid process (capitis) Actions:Unilateral: lateral flexion and ipsilateral rotation of trunk and head/neck. Bilateral: Extension of trunk and head/neck |
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Erector spinae (medial) Spinalis |
Origin:Common tendon from posterior iliac crest, dorsal sacrum, and lumbar spinous processes Insertion: upper thoracic spinous processes (thoracis), cervical spinous processes and ligamentum nuchae (cervicis), occipital bone between nuchal lines (capitis) Actions: Unilateral: lateral flexion and ipsilateral rotation of trunk/head/neck. Bilateral: Extension of trunk/head/neck |
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Transversospinalis 1. Semispinalis capitis 2. Semispinalis cervicis 3. Rotator longus 4. Rotator brevis 5. Multifundus lumborum |
Origin:Dorsal sacrum and posterior iliac crest, lumbar mammillary processes, cervical and thoracic transverse processes Insertion:Spinous processes and occipital bone Actions:Unilateral: lateral flexion, contralateral rotation of trunk/head/neck. Bilateral: Extension of trunk/head/neck. Span: 1. cervical to occipital bone 2. upper thoracic to C2 3. thoracic, 2 segments 4. thoracic, 1 segment 5. sacrum to lower thoracic |
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Levator costae
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Origin: Thoracic transverse processes Insertion: Superior borders of ribs 1-2 segments inferior Actions: Elevate ribs, assist lateral flexion |
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Intersegmental muscles Interspinalis Intertransverse |
Interspinalis: between adjacent spinous processes of cervical and lumbar vertebrae Intertransverse: between adjacent transverse processes in cervical and lumbar region Action: Role in proprioception |
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Suboccipital muscles Rectus capitis posterior major |
Origin: Spinous process of C2 Insertion: Inferior nuchal line, lateral to rcp minor Actions: Extension (bilateral) and ipsilateral rotation (unilateral) of head |
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Suboccipital muscles Rectus capitis posterior minor |
Origin: Posterior tubercle of C1 Insertion: Inferior nuchal line, medial to rcp major Actions: Extension (bilateral) of head |
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Suboccipital muscles Obliquus capitis superior |
Origin: Transverse process of C1 Insertion: Occiput between nuchal lines Actions: Extension (bilateral) and lateral flexion (unilateral) of head |
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Suboccipital muscles Obliquus capitis inferior |
Origin: Spinous process of C2 Insertion: Transverse process of C1 Actions: Ipsilateral rotation (unilateral) of head |
