Muscle Manual- Back Muscles

What is the innervation of Serratus Posterior Superior?

2-5 intercostal nerves

What is the action of the Serratus Posterior Superior?

proprioception and elevate ribs

What is the innervation of Serratus Posterior Inferior?

Ventral rami T9-T12 Spinal nerves

What is the action of serratus posterior inferior?

proprioception and depress ribs

What is the innervation of the Splenius?

Dorsal Rami of Spinal Nerves

What is the action of the Splenius?

unilateral: head and neck lateral flexion and ipsilateral rotation

bilateral: head and neck extension

Erector Spinae Innervation

Dorsal Rami of Spinal Nerves

Erector Spinae Action

unilateral: head and vertebral column lateral flexion

bilateral: head and vertebral column extension

What regions does Iliocostalis cover?

lumborum, thoracic, cervicis

What regions does longissimus cover?

thoracis, cervicis, capitis

What regions does spinalis cover?

thoracis, cervicis, capitis

transversospinal innervation

dorsal rami of spinal nerves

transversospinal action

unilateral: head and vertebral column contralateral rotation

bilateral: head and vertebral column extension

postural stabilizers

What regions does semispinalis cover?

most prominent in cervical region, then thoracic

NOT present in lumbar region

What regions does mutifidus cover?

most prominent in lumbar region

What regions does rotatores cover?

most prominent in thoracic region

interspinalis innervation

dorsal rami of spinal nerves

interspinalis action

aid in vertebral column extension and rotation

intertransversarii innervation

dorsal and ventral rami of spinal nerves

intertransversarii action

aid in vertebral column lateral flexion

levatores costarum innervation

dorsal rami of C8-T11 Spinal nerves

levatores costarum action

elevate ribs and aid in vertebral column lateral flexion

What regions does levatores costarum cover?

only in thoracic area

Rectus Capitis Posterior Major Innervation

Dorsal Ramus of C1 Spinal Nerve

Rectus Capitis Posterior Major Action

unilateral: head ipsilateral rotation

bilateral: head extension

rectus capitis posterior minor innervation

dorsal ramus of C1 Spinal Nerves

rectus capitis posterior minor action

head extension

obliquus capitis superior innervation

dorsal ramus of C1 spinal nerves

obliquus capitis superior action

unilateral: head lateral flexion

bilateral: head extension

obliquus capitis inferior innervation

dorsal ramus of C1 Spinal Nerves

obliquus capitis inferior action

unilateral: neck ipsilateral rotation

bilateral: neck extension