sept 23 Flashcards
trapezius, latissumus dorsi, levator scapula, and rhomboids are in what layer of the back muscles?
superficial/extrinsic
what is the shared function of the superficial muscle layer of the back
connect the upper limb to the trunk
serratus posterior superior and serratus posterior inferior are in what layer of the back muscles?
intermediate/intrinsic
what is the shared function of the intermediate muscle layer of the back?
accessory muscles of respiration
how many layers in the deep muscles of the back?
3 (superficial, intermediate, deep)
layer of deep back muscles, contains splenius capitis and splenius cervicis
superficial
layer of deep back muscles, contains spinalis, longissimus, and iliocostalis
intermediate
layer of deep back muscles, 3 columns of muscles collectively called the erector spinae/paraspinals
intermediate
layer of deep back muscles, muscles here have both superomedial and vertical fibre directions
deep
semispinalis, multifidus, and rotatores are in what layer of the deep back muscles?
deep
interspinales and intertransversarii are in what layer of the deep back muscles?
deep
the superomedial fibre muscles of the deep deep layer of the back are found where?
laminar groove (between the spinous and transverse processes)
which muscles of the deep deep layer of the back attach from the transverse process to the spinous processes of more superior vertebrae
superomedial fibre muscles
which muscles of the deep deep layer of the back are collectively called the transverseospinalis muscles
superomedial fibre muscles
the superomedial muscles of the deep deep layer of the back are in what order, from superficial to deep?
semispinalis, multifidus, rotatores
muscle of the intermediate layer of the back. deep to rhomboids
serratus posterior superior
muscles of the intermediate layer of the back. superficial to the erector spinae
serratus posterior superior and inferior
muscle of the intermediate layer of the back. medial attachment: SPs of C7-T3, lateral attachment: superior borders of ribs 2-5
serratus posterior superior
muscle of the intermediate layer of the back. elevates ribs 2-5 during deep inhalation
serratus posterior superior
muscle of the intermediate layer of the back. deep to the latissimus/thoracolumbar fascia
serratus posterior inferior
muscle of the intermediate layer of the back. medial attachment: SPs of T11-L2, lateral attachment: Lower 4 ribs
serratus posterior inferior
muscle of the intermediate layer of the back. draws ribs down and back during forced exhalation
serratus psoterior inferior
muscle of the superficial deep layer of the back. attaches the SPs of C4-T2 to the mastoird process and lateral superior nuchal line
splenius capitis
muscle of the superficial deep layer of the back. does ipsilateral rotation (unilateral) and extension of the neck (bilateral)
splenius capitis/cervicis
muscle of the superficial deep layer of the back. attaches SPs of T3-T5 to TVPs of C1-C4
splenius cervicis
which layer of deep back muscles arise inferiorly from the thoracolumbar fascia and spread out superlateraly
intermedate
muscle of the intermediate deep layer of the back. very thin, shortest column
spinalis
muscle of the intermediate deep layer of the back. sits in laminar groove and attaches to SPs
spinalis
muscle of the intermediate deep layer of the back. longest column
longissimus
muscle of the intermediate deep layer of the back. most visible and palpable
longissimus
muscle of the intermediate deep layer of the back. attaches to TVPs
longissimus
muscle of the intermediate deep layer of the back. attaches to the angles of the ribs
iliocostalis
actions of the muscles of the intermediate deep layer of the back.
lateral flexion of the vertebral column, extension of the vertebral column
muscles of the intermediate deep layer of the back from medial to lateral
spinalis, longissimus, iliocostalis
muscle of the deep deep layer of the back. superomedial, covers upper half of the spinal column
semispinalis
muscle of the deep deep layer of the back. superomedial, fibres attach 3-6 vertebrae apart from TVPs to SPs
semispinalis
muscle of the deep deep layer of the back. superomedial, attaches superiorly to the occipital bone between the superior and inferior nuchal lines
semispinalis
muscle of the deep deep layer of the back. does extension and contralateral rotation of the neck
semispinalis
muscle of the deep deep layer of the back. superomedial, largest mass in the back of the neck
semispinalis
muscle of the deep deep layer of the back. superomedial, attaches from S4-C2, fibres skip 1-3 vertebrae
multifidus
muscle of the deep deep layer of the back. superomedial. does extension, stabilization, lateral flexion, and contralateral rotation of the spine
multifidus
muscle of the deep deep layer of the back. superomedial. the only muscle to cross the posterior sacrum
multifidus
muscle of the deep deep layer of the back. superomedial, deepest in the laminar groove
rotatores
muscle of the deep deep layer of the back. superomedial, longus fibres skip 1 vertebra, brevis fibres do not
rotatores
muscle of the deep deep layer of the back. superomedial. does stabilization and contralateral rotation
rotatores
muscle of the deep deep layer of the back. vertical, paired muscles on either side of cervical and lumbar SPs
interspinales
muscle of the deep deep layer of the back. vertical, does extension
interspinales
muscle of the deep deep layer of the back. vertical, attach TVPs of adjacent vertebrae of cervical and lumbar spine
intertransverarii
muscle of the deep deep layer of the back. vertical, does lateral flexion
intertransversarii
