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Gross Anatomy
Deep Back
61
Anatomy
Graduate
10/17/2009

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Cards

Term
Splenius Origin
Definition
Arises from ligamentum nuchae and spinous processes of C7-T3 or T4
Term
Splenius Insertion (capitis)
Definition
fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone
Term
Splenius Insertion (cervicis)
Definition
tubercles of transverse processes of C1-3 or 4
Term
Splenius Innervation
Definition
Dorsal Rami of Spinal nerves
Term
Splenius Action (acting alone)
Definition
Laterally end and rotate head to side of active muscles.
Term
Splenius Action (acting together)
Definition
Extend head and neck
Term
Serratus Posterior Superior Origin
Definition
Nuchal Ligament, spinous processes of C7-T3
Term
Serratus Posterior Superior Insertion
Definition
Superior borders of 2nd to 4th ribs
Term
Serratus Posterior Superior Innervation
Definition
2nd to 5th Intercostal Nerves
Term
Serratus Posterior Superior Action
Definition
Elevate Ribs
Term
Serratus Posterior Inferior Origin
Definition
Spinous processes of T11-L2 vertebrae
Term
Serratus Posterior Inferior Insertion
Definition
Inferior borders of 8th to 12th ribs near their angles.
Term
Serratus Posterior Inferior Innervation
Definition
Anterior rami of T9-12 thoracic spinal nerves
Term
Serratus Posterior Inferior Action
Definition
Depresses ribs
Term
Erector Spinae Origin
Definition
Arises by a broad tendon from posterior part of iliac crest, posterior surface of sacrum, sacral and inferior lumbar spinous processes, and supraspinous ligament
Term
Erector Spinae Insertion (Iliocostalis)
lumborum, thoracis, and cervicis
Definition
fibers run superiorly to angles of lower ribs and cervical transverse processes.
Term
Erector Spinae Insertion (Longissimus)
thoracis, cervicis, and capitis
Definition
fibers run superiorly to ribs between tubercles and angles to transverse processes in thoracic and cervical regions and to mastoid process of temporal bone.
Term
Erector Spinae Insertion (Spinalis)
Thoracis, cervicis, capitis
Definition
fibers run superomedially to occipital bone and spinous process in the upper thoracic region and to skull
Term
Erector Spinae Innervation
Definition
Dorsal rami of spinal nerves
Term
Erector Spinae Action (acting bilaterally)
Definition
extend vertebral column and head; as back is flexed they control movement by gradually lengthening their fibers
Term
Erector Spinae Action (acting unilaterally)
Definition
laterally bend vertebral column
Term
Semispinales Origin
Definition
Arises from transverse processes of C4-T12
Term
Semispinales Insertion (thoracis, cervicis, and capitis)
Definition
fibers run superomedially to occipital bone and spinous processes in thoracic and cervical regions.
Term
Semispinales Innervation
Definition
Dorsal rami of Spinal Nerves
Term
Semispinales Action
Definition
Extend head and thoracic and cervical regions of vertebral column and rotate them contralaterally.
Term
Multifidus Origin
Definition
Arises from sacrum and ilium, transverse processes of T1-3, and articular processes of C4-7
Term
Multifidus Insertion
Definition
Fibers pass superomedially to spinous processes of vertebrae above, spanning 2-4 segments
Term
Multifidus Innervation
Definition
Dorsal rami of spinal nerves
Term
Multifidus Action
Definition
Stabilizes vertebrae during local movements of vertebral column.
Term
Rotatores Origin
Definition
Arises from transverse processes
Term
Rotatores Insertion
Definition
Pass superomedially to attach to junction of lamina and transverse processes, spanning segments 1-2
Term
Rotatores Innervation
Definition
Dorsal Rami of Spinal Nerves
Term
Rotatores Action
Definition
Stabilize vertebrae and assist with local extension and rotary movements of vertebral column
Term
Interspinales Origin
Definition
Superior surfaces of spinous processes of cervical and lumbar vertebrae.
Term
Interspinales Insertion
Definition
Inferior surface of spinous processes of vertebrae superior to vertebrate of origin
Term
Interspinales Innervation
Definition
Dorsal Rami of Spinal nerves
Term
Interspinales Action
Definition
Aid in extension and rotation of vertebral column.
Term
Intertransversii Origin
Definition
transverse processes of cervical and lumbar vertebrate
Term
Intertransversii Insertion
Definition
Transverse processes of adjacent vertebrate
Term
Intertransversii Innervation
Definition
Dorsal and ventral rami of spinal nerves
Term
Intertransversii Action
Definition
aid in lateral bending of vertebral column
BILATERALLY: stabilize vertebral column
Term
Levatores Costarum Origin
Definition
Tips of transverse processes of C7 and T1-11
Term
Levatores Costarum Insertion
Definition
Pass inferolaterally and insert on rib between its tubercle and angle.
Term
Levatores Costarum Innervation
Definition
Dorsal rami spinal nerves
Term
Levatores Costarum action
Definition
elevate ribs, assisting inspiration, assist with lateral bending of vertebral column.
Term
Internal Intercostal Origin
Definition
Inferior border of ribs
Term
Internal Intercostal Insertion
Definition
Superior border of ribs below
Term
Internal Intercostal innervation
Definition
Intercostal nerve
Term
Internal Intercostal Action
Definition
Depresses ribs
Term
Innermost Intercostal Origin
Definition
Inferior border of ribs
Term
Internal Intercostal Insertion
Definition
Superior border of ribs below
Term
Internal Intercostal Innervation
Definition
Intercostal Nerve
Term
Internal Intercostal Action
Definition
elevate ribs
Term
Subcostal Origin
Definition
Internal surface of lower ribs near their angles
Term
Subcostal Insertion
Definition
Superior borders of 2nd or 3rd ribs below
Term
Subcostal Innervation
Definition
Intercostal Nerve
Term
Subcostal Action
Definition
elevate ribs
Term
Transversus thoracis origin
Definition
Posterior surface of lower sternum
Term
Transversus Thoracis Insertion
Definition
Internal surface of costal cartilages 2-6
Term
Transversus Thoracis innervation
Definition
Intercostal nerve
Term
Transversus Thoracis action
Definition
Depresses ribs
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