Muscles of the Back-Origin/Insertion Flashcards
Trapezius
O: occiput, nuchal ligament, spinous processes of thoracic vertebrae
I: scapular spine, acromion
Latissimus Dorsi
O: spinous processes of T7-L3
I: intertubercular groove of humerous
Rhomboideous major/minor
O: upper thoracic spinous processes
I: vertebral border of scapula
levator scapulae
O: transverse processes of C1-4
I: vertebral border of scapula between superior angle and base of scapular spine
serratus posterior superior
O: lower end of ligamentum nuchae, spinous processes of C7-T2 or 3
I: ribs 2-5, lateral to angles of ribs
serratus posterior inferior
O: spinous processes of T10 or 11-12
I: lower 3 or 4 ribs, lateral to angle of ribs
serratus anterior
O: ribs 1-8 or 9
I: vertebral border of scapula
splenius capitis
O: caudal half of ligamentum nuchae and spinous processes of C7-T3/4
I: mastoid process and occipital bone just inferior to lateral 1/3 of superior nuchal line
splenius cervicis
O: narrow tendinous band from spinous processes of T3-T6
I: posterior tubercles of transverse processes of upper 2-3 cervical vertebrae
spinalis capitis
O: lower part of ligamentum nuchae and spinous processes of C7-T2
I: base of occiput between superior and inferior nuchal lines
spinalis cervicis
O: lower part of ligamentum nuchae and spinous processes of C7-T2
I: spinous processes of C2-C3 (sometimes C4)
spinalis thoracis
O: spinous processes
I: spinous process of upper 4-8 thoracic vertebrae
longissimus cervicis
O: transverse processes of upper 4-6 thoracic vertebrae, medial to insertion of longissimus thoracis
I: transverse processes of 2nd-6th cervical vertebrae
longissimus thoracis
O: thoracolumbar fascia and accessory processes of lumbar vertebrae
I: transverse processes of lower 9 thoracic vertebrae and lower 9 ribs
iliocostalis cervicis
O: upper 6 ribs medial to insertion of iliocostalis thoracis
I: transverse processes of C4,5,6
