Term
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Definition
Attachment
Descending part: superior nuchal line, external occipital protuberance and nuchal ligament.
Middle part: spinous processes of thoracic vertebrae
Ascending part: spinous processes of thoracic vertebrae
Attachment
Descending part: clavicle and acromion of scapula
Middle part: spine of scapula
Ascending part: spine of scapula
Action
descending part: elevate scapula
Middle part: retracts scapula
Ascending part: depresses scapula
descending and ascending together: rotate scapula superiorly
Innervation:
spinal accessory nerve (motor [C1- C-5])
ventral (anterior) rami C3 and C4 (pain and proprioception) |
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Term
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Definition
Attachment:
spinous processes of thoracic and lumbar vertebrae
Iliac crest
Lower ribs
Attachment:
Intertubercular sulcus (bicipital groove) of humerus
Action:
Extends, adducts, and medially rotates arm
Innervation:
Thoracodorsal nerve (C6-C8) |
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Term
| Rhomboid major and minor muscles |
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Definition
Attachment:
Minor: spinous processes of C7 and T1
Major: spinous processes of upper thoracic vertebrae
Attachment: both- medial border of scapula
Action: both- retract scapula and rotate scapula inferiorly
Innervation: both- dorsal scapular nerve (C4-C5) |
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Term
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Definition
Attachment: transverse processes of cervical vertebrae
Attachment: medial border of scapula
Action: elevates scapula, rotates scapula inferiorly
Innervation:
Dorsal scapular nerve (C5)
Ventral (anterior) rami of C3 and C4 |
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Term
| Serratus posterior superior muscle |
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Definition
Attachment: nuchal ligament, spinous processes of thoracic vertebrae
attachment: upper ribs
action: elevates ribs
innervation: upper intercostal nerves t2 - t5 |
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Term
| Serratus posterior inferior muscle |
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Definition
Attachment: spinous processes of thoracic and lumbar vertebrae
Attachment: lower ribs
action : depresses ribs
innervation: lower intercostal nerves t9 - t11 and subcostal nerve T 12 |
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Term
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Definition
Attachment:
splenius capitis: nuchal ligament and spinous processes of thoracic vertebrae
splenius cervicis: spinous processes of thoracic vertebrae
attachment:
splenius capitis: mastoid process and superior nuchal line
splenius cervicis: transverse processes of cervical vertebrae
action: unilaterally: latterly Bends and rotates head and neck
Bilaterally : extend head and neck
Innervation : posterior ramai of cervical spinal nerves c1 through c8 |
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Term
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Definition
Attachment: spinous processes of thoracic and lumbar vertebrae
attachment: spinous processes of cervical and thoracic vertebrae
action
bilaterally : extend the vertebral column
unilaterally: laterally bends vertebral column
innervation: posterior rami of cervical, thoracic and lumbar spinal nerves c1 through L 5 |
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Term
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Definition
Attachment: Iliac crest, posterior surface of sacrum, spinous processes of lumbar vertebrae
Attachment: ribs between tubercle and angle, transverse processes of cervical vertebrae, mastoid process
action: bilaterally: extend the vertebral column
unilaterally: latterly bends the vertebral column
Innervation: posterior rami of cervical, thoracic and lumbar spinal nerves c1 through L 5 |
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Term
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Definition
Attachment: Iliad crest, posterior surface of sacrum
Attachment: angles of ribs, transverse processes of cervical vertebrae
Action: bilaterally: extend vertebral column
Unilaterally: laterally bends vertebral column
Innervation: posterior rami of cervical, thoracic, and lumbar spinal nerves C1-L5 |
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Term
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Definition
attachment:
transverse processes of cervical and thoracic vertebrae
Attachment:
Semispinalis capitis: occipital bone b/n superior and inferior nuchal lines
Semispinalis cervicis: spinous processes of cervical vertebrae
Semispinalis thoracis: spinous processes of thoracic vertebrae
Action:
Bilaterally: extend head and vertebral column
Unilaterally: rotates head and vertebral column
Innervation: Posterior rami of cervical and thoracic spinal nerves (C1-T12) |
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Term
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Definition
Attachment:
Posterior sacrum, posterior superior iliac spine, mammillary processes of lumbar vertebrae, transverse processes of cervical vertebrae, articular processes of cervical vertebrae
Attachment:
Spinous processes of cervical, thoracic and lumbar vertebrae
Action:
Extend and rotate vertebral column
Innervation:
posterior rami of cervical, thoracic, and lumbar spinal nerves (C1-L5) |
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Term
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Definition
Attachment:
Transverse processes of all vertebrae
Attachment:
Lamina of all vertebrae
Action:
Extend and rotate vertebral column
Innervation:
Posterior rami of cervical, thoracic, and lumbar spinal nerves (C1-L5) |
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Term
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Definition
Attachment:
Superior surface of spinous processes of vertebrae
Attachment:
Inferior surface of spinous processes of vertebrae
Action:
Extend vertebral column
Innervation:
Posterior rami of cervical, thoracic, and lumbar spinal nerves (C1-L5) |
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Term
| Intertransversarii muscles |
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Definition
attachment:
superior surface of transverse processes of vertebrae
Attachment:
inferior surface of transverse processes of vertebrae
Action:
Lateral flexion of vertebral column
Innervation:
Posterior and anterior rami of cervical, thoracic, and lumbar spinal nerves (C1-L5) |
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Term
| Levatores costarum muscles |
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Definition
Attachment:
transverse processes of C7 and thoracic vertebrae
Attachment:
ribs between tubercle and angle
Action:
elevate ribs, lateral flexion of vertebral column
Innervation:
Posterior rami of C8-T11 spinal nerves |
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Term
| Obliquus capitis superior muscle |
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Definition
Attachment:
Transverse process of atlas
Attachment:
Occipital bone b/n superior and inferior nuchal lines
Action:
Extends head
Innervation:
Suboccipital nerve (posterior rami of C1) |
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Term
| Obliquus capitis inferior muscle |
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Definition
Attachment:
Spinous process of axis
Attachment:
Transverse process of atlas
Action:
Rotates head
Innervation:
Suboccipital nerve (posterior rami of C1) |
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Term
| Rectus capitis posterior major muscle |
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Definition
Attachment:
Spinous process of axis
Attachment:
Inferior nuchal line
Action:
Extends head
Innervation:
Suboccipital nerve (posterior rami of C1) |
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Term
| Rectus capitis posterior minor muscle |
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Definition
Attachment:
Posterior tubercle of atlas
Attachment:
Inferior nuchal line
Action:
Extends head
Innervation:
Suboccipital nerve (posterior rami of C1) |
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