Origins and Insertions Flashcards
Upper trapezius
O: External occipital protuberance, medial 1/3 superior nuchal line, ligamentum nuchae, C7
I: lateral 1/3 clavicle
Middle trapezius
O: Spinous process T1-T5
I: Medial margin of acromion, spine of scapula, and crest of its superior lip
Lower trapezius
O: Spinous process T6-T12
I: spine of scapula tubercle
Latissimus dorsi
O: spinous process of T6-T12 and spinous process of lumbar and sacral vertebrae by way of thoracolumbar fascia, ribs 9-12, iliac crest
I: floor of intertubercular groove
Levator scapulae
O: posterior tubercles of the transverse process of C1-C4
I: medial border of scapula superior to root of spine
Rhomboid Major
O: spinous process of T2-T5
I: medial border of scapula from level of spine to inferior angle
Rhomboid Minor
O: Ligamentum nuchae, spinous process of C7 and T1
I: root of scapular spine
Serratus posterior superior
O: inferior part of ligamentum nuchae and spinous process of C7 and T1-T3
I: ribs 2-5
Serratus posterior inferior
O: spinous process of T11, T12 and L1,L2 via thoracolumbar fascia
I: inferior 3 or 4 ribs (8-12)
Splenius capitis
O: ligamentum nuchae at C3-C7 and spinous process of C7-T4
I: mastoid process and occipital bone inferior to the lateral 1/3 of the superior nuchal line
Splenius cervicis
O: spinous process of T3-T6
I: transverse process of C1-C3
Iliocostalis lumborum
O: broad tendon attached inferiorly to the posterior part of iliac crest, posterior sacrum, supraspinous ligaments, sacrotuberous and sacroiliac ligamenous, spinous process of T12, L1-L5
I: inferior 6 ribs and transverse process of all lumbar vertebrae
Iliocostalis thoracis
O: Ribs 12-7
I: upper 6 ribs and transverse process of C7
Iliocostalis cervicis
O: ribs 3-6
I: posterior tubercles of transverse process of C4-C6
Longissimus thoracis
O: lumbar region blended with iliocostalis lumborum, posterior surfaces of transverse and accessory processes of L1-L5 vertebrae and anterior layer of thoracolumbar fascia
I: transverse process of all thoracic vertebrae and ribs 2-12 between tubercles and angles
Longissiumus cervicis
O: transverse process of T1-T5
I: Posterior tubercles of transverse processes of C2-C6
Longissimus capitis
O: transverse processes of T1-T5 and articular processes of C4-C7
I: mastoid process of temporal bone
Spinalis thoracis
O: spinous processes of T11, T12 and L1, L2
I: spinous processes of T1-T4 or through T8
Spinalis cervicis
O: lower part of ligamentum nuchae, spinous process of C6, C7
I: spinous process of axis and spinous processes of C2-C3
Spinalis capitis
O: spinous process C5-C7 and T1-T3
I: occiput between superior and inferior nuchal lines
Semispinalis thoracis
O: transverse process of T6-T10
I: Spinous process of C6-T4
Semispinalis cervicis
O: transverse process of T1-T5
I: spinous process of C2-C5
Semispinalis capitis
O: transverse process of C7 and T1-T6 and articular processes of C4-C6
I: occiput between superior and inferior nuchal lines
Multifidus
O: sacrum, aponeurosis of erector spinae, ilium, posterior sacroiliac ligament, mamillary process of L1-L5, transverse process of T1-T12 and articular process of C4-C7
I: spans 2-4 vertebrae to insert into the spinous process of vertebra above from L5-C2
Rotatores
Arises from the transverse process and inserts into the spinous process of the vertebrae above it or 2 vertebrae above
Interspinales and intertransversarii
Unite spinous and transverse processes of consecutive vertebrae
Levator costarum
O: transverse process of C7 and T1-T11
I: inferior ribs
Rectus capitis posterior major
O: spinous process of C2
I: inferior to inferior nuchal line
Rectus capitis posterior minor
O: posterior tubercle on the posterior arch of C1
I: inferior to inferior nuchal line
Inferior oblique
O: spinous process of C2
I: transverse process of C1
Superior oblique
O: transverse process of C1
I: between superior and inferior nuchal lines
