Deep mm of the back (intrinsic) Flashcards

1
Q
Iliocostalis m 
(erector spinae; intermediate layer)
A

attachments- from TLF attached to the sacrum, iliac crest, spinous processes L5-T11, supraspinous lig., angles of ribs to costal angles

actions- extension & lateral flexion of the vertebral column

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2
Q
Longissimus m 
(erector spinae; intermediate layer)
A

attachments- from TLF attached to the sacrum, iliac crest, spinous processes L5-T11, supraspinous lig., angles of ribs to ribs & transverse processes

actions- extension & lateral flexion of the vertebral column

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3
Q
Spinalis m
(erector spinae; intermediate layer)
A

attachments- from TLF attached to the sacrum, iliac crest, spinous processes L5-T11, supraspinous lig., angles of ribs to spinous processes

actions- extension & lateral flexion of the vertebral column

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4
Q

Semispinalis (transversospinales group)

A

attachments- from transverse processes to distant superior spinous processes

actions- extension & contralateral rotation of the vertebral column

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5
Q

Multifidus (transversospinales group)

A

attachments- from sacrum, posterior SI ligament, posterior iliac spine, transverse processes to more superior spinous processes

actions- extension & contralateral rotation of the vertebral column

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6
Q

Rotatores longus and brevis (transversospinales group)

A

attachments: transverse to spinous process of vertebra above (1-2 levels)
actions: extension & contralateral rotation of the vertebral column

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7
Q

Interspinales

A

attachments: between spinous processes of adjacent vertebrae cervical (6), thoracic (2-3), lumbar (4)
action: extension of spine

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8
Q

Intertransversarii

A

attachments: between the transverse processes of adjacent vertebrae
action: lateral flexion of spine

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9
Q

Splenius cervicis

superficial layer

A

attachments: from spinous processes of T3-T6 to posterior tubercles of transverse processes of first 3 cervical vertebrae
actions: extension, lateral flexion, ipsilateral rotation
innervation: dorsal rami of spinal nerves

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10
Q

Splenius capitis

superficial layer

A

attachments: from ligamentum nuchae and spinous processes T4-C7 to the lateral third of the superior nuchal line
actions: extension, lateral flexion, ipsilateral rotation
innervation: dorsal rami of spinal nerves

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