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back/neck

back and neck muscles

QuestionAnswer
splenius capitis - attachments lower 1/2 of ligamentum nuchae and SP of upper 3-4 TVs ---> mastoid process and adjoining occipital bone
splenius cervices - attachments lower 1/2 of ligamentum nuchae and SP of upper 3-4 TVs ----> TPs of upper CV
iliocostalis lumborum - attachments sacrum, iliac crest, LV SPs -------> angles of lower 6 ribs
iliocostalis thoracis - attachments angles of lower 6 ribs ------ > angles of upper 6 ribs
iliocostalis cervicis - attachments angles of upper 6 ribs -----> TPs of the CV
longissimus thoracis - attachments sacrum, Iliocostalis Lumborum, TPs of LV ------> lower 9 ribs and TPs
longissimus cervicis - attachments T1-T6 TPs ------> C2 - C6 TPs
longissimus capitis - attachments C2 - C7 articular pillars -------> mastoid process
spinalis thoracis - attachments T11 - L2 SPs ---------> T1 - T8 SPs
spinalis cervicis - attachments C7 SP and ligamentum nuchae --------> C2 - C4 SPs
spinalis capitis - attachments blends with semispinalis, both attachments
semispinalis thoracis - - attachments TPs of T7 - T12 --------> SP of C6 - T2
semispinalis cervices - attachments TPs of T1 - T6 ---------> SP of C2 - C5
semispinalis capitis - attachments TPs of C4 - T6 ---------> occipital bone
multifidus - attachments posterior sacrum, iliac crest, TPs, and lumbar mammilary processes ---------> C2 - L5 SPs spans 2-4 segments
rotatores - attachments TPs ----------> SP of C2 - L5 spans 1 -2 segments
interspinales - attachments connects spines of contiguous vertebrae
intertransversarii - attachments connects transverse processes of contiguous vertebrae
rectus capitis posterior major - attachments spine of axis --------> lateral part of inferior nuchal line of occipital bone
rectus capitis posterior minor - attachments posterior aspect of atlas ----------> medial part of inferior nuchal line
obliquus capitis inferior - attachments spine of axis ----------> transverse process of atlas
obliquus capitis superior - attachments transverse process of atlas ----------> occipital bone between superior and inferior nuchal lines
splenius capitis - action bilateral: head and neck extension......unilateral: side bending and rotation to same side
splenius cervicis - action bilateral: head and neck extension......unilateral: side bending and rotation to same side
iliocostalis - action extension and side bending
longissimus - action extension and side bending. also, capitis rotates head to same side
spinalis - action extension
semispinalis - action extension and rotation toward opposite side
multifidus - action extension and rotation to opposite side
rotatores - action extension and rotation to opposite side
interspinales - action extension
intertransversarii - action side bending
rectus capitis posterior major - action extension of head and rotation toward same side
rectus capitis posterior minor - action extension of head
obliquus capitis inferior - action rotation of head toward same side
obliquus capitis superior - action extension and side bending of head
borders of suboccipital triangle rectus capitis posterior major, obliquus capitis inferior, obliquus capitis superior
floor of suboccipital triangle posterior atlanto-occipital membrane and posterior arch of C1
contents of suboccipital triangle vertebral artery and suboccipital nerve
psoas major - attachments TPs of the LV, sides of bodies of T12-L5 and intervening discs, to the inferior attachment by a strong tendon to the lesser trochanter of the femur.
psoas major - innervation lumbar plexus via the ventral branches of L2-L4 spinal nerves
iliacus - attachments
Created by: migato2
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