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27 Cards in this Set
- Front
- Back
Serratus Posterior Superior
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O: ligamentum nuchae and spinous processes of C7 and T1-3 vertebrae
I: upper border of ribs 2-5 N: thoracic nerves A: raises ribs 2-5, increasing thoracic cage. muscle of Inspiration |
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Serratus Posterior Inferior
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O: spinous processes of T11-L3
I: inferior border of last 4 ribs (ribs 9-12) near their angles N: thoracic nerves A: draws ribs 9-12 outward and downward, counteracting inward pull of diaphragm. muscle of Exhalation |
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Iliocostalis Lumborum
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O: iliac crest
I: angle of ribs N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the vertebral column (draw the ribs caudally) Unilateral: lateral flexion same side, rotation opposite side |
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Iliocostalis Thoracis
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O: angle of ribs
I: angle of ribs N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the vertebral column (draw the ribs caudally) Unilateral: lateral flexion same side, rotation opposite side |
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Iliocostalis Cervicis
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O: angle of ribs
I: transverse processes of cervical vertebrae N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the neck Unilateral: lateral flexion same side, rotation same side |
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Longissimus Thoracis
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O: sacrum
I: transverse processes N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the vertebral column (draw the ribs caudally) Unilateral: lateral flexion same side, rotation opposite side |
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Longissimus Cervicis
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O: transverse processes
I: transverse processes N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the neck Unilateral: lateral flexion same side, rotation same side |
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Longissimus Capitis
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O: transverse processes
I: mastoid process N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the head Unilateral: lateral flexion of head same side, rotate face same side |
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Spinalis Thoracis
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O: spinous processes
I: spinous processes N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the vertebral column |
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Spinalis Cervicis
(blends with semispinalis) |
O: spinous processes
I: spinous processes N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the vertebral column |
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Spinalis Capitis
(blends with semispinalis) |
O: blends in with semispinalis muscles
I: blends in with semispinalis muscles N: branches of the dorsal primary divisions of the spinal nerves A: bilateral: extend the vertebral column |
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Splenius Capitis
Splenius Cervicis |
O: ligamentum nuchae and spinous processes of C7-T6
I: capitis portion – occipital bone and mastoid process Cervicis portion – transverse processes of upper 2 or 3 cervical vertebrae N: middle and lower cervical spinal nerves A: bilateral: extend head and neck, unilateral: lateral flexion neck, rotate face same side |
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Semispinalis Thoracis
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O: transverse processes of thoracic vertebrae
I: spinous processes of lower cervical and upper thoracic vertebrae N: dorsal primary rami of spinal nerves A: bilateral: extends vertebral column Unil: rotates opposite side |
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Semnispinalis Cervicis
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O: transverse processes of cervical vertebrae
I: spinous process of C2-5 N: dorsal primary rami of spinal nerves A: bil: extends vertebral column Unil: rotates opposite side |
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Semispinalis Capitis
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O: transverse processes of cervical vertebrae
I: occipital bone N: dorsal primary rami of spinal nerves A: bil: extends the head Unil: rotates head opposite side |
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Multifidus
(easily seen in lumbar, but blends with semispinales and spinales in upper thoracic and cervical) |
O: groove on each side of spinous processes of vertebrae, accessory/mammary processes.
Covers lamina from sacrum to axis I: spinous process of vertebra above. Each bundle ascends obliquely and inserts 2-5 vertebrae above N: dorsal primary rami of spinal nerves A: bil: extends vertebral column Unil: rotates opposite side, lateral flexion same side |
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Rotatores
(deepest group, length of vertebral column, best seen in thoracic) |
O: transverse processes of one vertebra
I: base of spinous process of the vertebra above N: dorsal primary rami of spinal nerves A: bil: extend the vertebral column Unil: rotate opposite side |
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Interspinales
(blend with ligamentum nuchae in cervical) |
O: spinous processes
I: spinous processes N: dorsal primary rami of spinal nerves A: extends the vertebral column |
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Intertransversarii
(easily seen in thoracic) |
O: transverse processes
I: transverse processes N: dorsal primary rami of spinal nerves A: bil: extend the vertebral column Unil: lateral flexion same side |
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Levator Costorum
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O: transverse processes of C7-T11
I: the rib below, close to the tubercle N: dorsal primary rami of spinal nerves A: raises ribs, increasing thoracic cavity in inspiration |
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Transversospinal muscles
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1. semispinalis
2. multifidus 3. rotatores |
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Erector spinae (sacrospinalis)
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1. iliocostalis
2. longissimus 3. spinalis |
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What do semispinales and rotatores do?
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extend and rotate to the opposite side.
they DO NOT laterally flex. |
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Erector spinae (sacrospinalis)
spinalis |
thoracis
cervicis - cant be seen, blends w/ semispinalis capitis - cant be seen, blends w/ semispinalis |
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Erector spinae (sacrospinalis)
longissimus |
thoracis
cervicis capitis |
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Erector spinae (sacrospinalis)
iliocostalis |
lumborum
thoracis cervicis |
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semispinalis
|
thoracis
cervicis capitis |