Deep Back Muscles Flashcards
Serratus Posterior Superior
(attachment)
- Nuchal ligament
- Spinous processes of the cervical and thoracic vertebrae
AND
-upper limbs
Serratus Posterior Superior
(innervation)
Upper Intercostal nerves (T2-T5)
Serratus Posterior Superior
(action)
Elevates ribs
Serratus Posterior Inferior
(attachment)
Spinous processes of thoracic and lumbar vertebrae
AND
lower ribs
Serratus Posterior Inferior
(innervation)
Lower Intercostal nerves (T9-T11)
AND
Subcostal nerve (T12)
Serratus Posterior Inferior
(action)
Depresses ribs
Splenius capitis
(attachment)
- nuchal ligament
- spinous processes of cervical and thoracic vertebrae
AND
-mastoid process
Splenius capitis
(innervation)
Posterior Rami of cervical spinal nerves (C1-C8)
Splenius capitis
(action)
Unilaterally:
Laterally Bends and Rotates head and neck
Bilaterally:
Extends head and neck
Splenius cervicis
(attachment)
Spinous processes of thoracic vertebrae
AND
Transverse processes of cervical vertebrae
Splenius cervicis
(innervation)
Posterior Rami of cervical spinal nerves (C1-C8)
Splenius cervicis
(action)
Unilaterally:
Laterally bends and rotates head and neck
Bilaterally:
Extends head and neck
Spinalis
(innervation)
Posterior rami of cervical, thoracic, and lumbar spinal nerves (C1-L5)
Spinalis
(action)
Unilaterally:
Laterally bends vertebral column
Bilaterally:
Extends vertebral column
Longissimus
(attachment)
- Iliac crest
- Posterior surface of sacrum
- Spinous processes of lumbra vertebrae
AND
- Ribs between tubercle and angle
- Transverse processes of cervical vertebrae
- Mastoid process
Longissimus
(innervation)
Posterior rami of cervical, thoracic, and lumbar nerves (C1-L5)
Longissimus
(action)
Unilaterally:
Laterally bends the vertebral column
Bilaterally:
Extends vertebral column
Iliocostalis
(attachment)
- Iliac crest
- Posterior surface of sacrum
AND
- Angles of ribs
- Transverse processes of cervical vertebrae
Iliocostalis
(innervation)
Posterior rami of cervical, thoracic, and lumbar nerves
(C1-L5)
Iliocostalis
(action)
Unilaterally:
Laterally bends vertebral column
Bilaterally:
Extends vertebral column