Anterior Scalene Flashcards
Insertion of anterior scalene
1st rib
Origin of Anterior scalene
Transverse processes of C3-C6
Innervation of anterior scalene
Cervical spinal nerves C4-C6
Action of anterior scalene
Flexes neck laterally and elevates 1st rib during forced inspiration
Origin of latissimus dorsi
Spinous process of last 6 thoracic vertebra, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs
Insertion of latissimus dorsi
Inter tubercle groove of humerus
Innervation of latissimus dorsi
Thoracodorsal nerve C6,C7,C8
Action of latissimus dorsi
Elevates, adducts, medically rotates shoulder joint; raises body towards arm during climbing
Origin of trapezius
Nuchal ligament, medial Nuchal line, EOP, spinous processes of C7-T12
Insertion of trapezius
Spine of scapula, acromion, lateral 3rd of clavical
Innervation of trapezius
Spinal accessory nerve CN11 and C3, C4 spinal nerves
Action of trapezius
Descending fibers: elevate scapula
Middle: retracts scapula
Ascending: depresses scapula
A+D: rotAte glenoid cavity superiorly
Origin of rhomboid major
Spinous processes of t2-t5
Origin of rhomboid minor
Nuchal ligament C7-T1
Insertion of rhomboid major
Medial border inferior to spine of scapula
Insertion of rhomboid minor
Medial end of scapular spine
Innervation of rhomboid
Dorsal scapular C4 and C5
Action of rhomboids
Retracts scapula and depresses glenoid cavity, fix scapula of thoracic wall
Origin of levator scapulae
Posterior tubercles of transverse processes of C1-C4
Insertion of levator scapulae
Medial border of the scapula superior to the spine
Innervation of levator scapulae
Dorsal scapular C5 and cervical C3 and 4
Action of levator scapulae
Elevates the scapula and tilts glenoid cavity inferiorly
Origin of splenius capitis and splenius cervicis
Nuchal ligament and spinous processes of C7-T6
Insertion of splenius capitis
Mastoid process and superior Nuchal line
Insertion of splenius cervicis
Tubercles of transverse processes C1-C4
Innervation of splenius capitis and cervicis
Posterior rami of spinal nerves
Action of splenius capitis
Unilateral: Rotates head to one side and laterally flex
Bilateral: extend head and neck
Origin of spinalis
Broad tendon of iliac crest, posterior part of iliac crest, supraspinous ligament, sacro-iliac ligament, spinous processes of lumbar and sacral vertebra
Insertion of spinalis
Fibers run superiorly to spinous processes in upper thoracic region and to cranium
Innervation of spinalis
Posterior rami of spinal nerves
Action of spinalis
Bilaterally: extend vertebral column and head
UniLaterally: laterally flex vertebral column
Origin if longissimus
Broad tendon of iliac crest, sacro-iliac ligament, suprspinous ligament, posterior part of iliac crest, posterior surface of sacrum, spinous processes of lumbar and sacral vertebrae
Insertion of longissimus
Fibers run superiorly to ribs between tubecles and angles to transverse processes in thoracic and cervical regions and to mastoid of temporal bone
Innervationof longissimus
Posterior rami of spinal nerves
Action of longissimus
Bilaterally: extend head And vertebral column
Unilaterally: laterally flex vertebral column
Origin of iliocostalis
Broad tendon of iliac crest, posterior part of iliac crest, sacro-iliac ligament, posterior surface of sacrum, supraspinous ligament, spinous processes of lumbar and sarcral vertebrae
Insertion of iliocostalis
Fibers run superiorly to angles of lower ribs and cervical transverse processes
Innervation of iliocostalis
Posterior rami of spinal nerves
Action of iliocostalis
Bilaterally: extends head and vertebral column
Unilaterally: laterally flexes vertebral column
Origin of semispinalis capitis
Transverse processes of C4-T10
Insertion of semispinalis capitis
Occipital bone, spinous processes in upper thoracis and cervical regions, spans 4-6 segments
Innervation of semispinalis capitis
Posterior rami of spinal nerves
Action of semispinalis capitis
Extends head and thoracic and cervical regions of vertebral column and rotates the contralaterally
Origin of multifidus
Posterior sacrum, superior iliac spine, aponeruosis of erector spinae, sacro-iliac ligament, mammilarry processes of lumbar vert., transverse processes of thoracic vertebrae, articular processes of C4-C7
Insertion of multifidus
Fibers pass obliquely superior medially to spinous processes of vertebrae 2-4 segments superior to origin
Action of multifidus
Contralateral rotation and stabilizes during local movement of vertebral column
Origin of rotatores
Transverse processes of vertebrae
Insertion of rotatores
Fibers pass superior medially to attach to junction of lamina and transverse processes/ spinous processes of vertebrae immediately or two segments superior to vertebrae origin
Action of rotatores
Organs of proprioception, maybe stabilize vertebrae and assist with extension and rotation
Origin of rectus capitis posterior minor
Posterior tubercle of posterior arch of C1
Insertion of rectus capitis posterior minor
Medial inferior Nuchal line
Innervation of rectus capitis posterior minor
Posterior rami of C1 suboccipital nerve
Action of rectus capitis posterior minor
Unilaterally: rotates head to one side
Bilaterally: extends head
Origin of rectus capitis posterior major
Spinous process of C2
Insertion of rectus capitis posterior major
Lateral part of inferior nuchal line
Innervation of rectus capitis posterior major
Posterior rami of C1 suboccipital nerve
Action of rectus capitis posterior major
Unilaterally: rotates head to one side
Bilaterally: extends head
Origin if obliqus capitis inferior
Spinous process of C2
Insertion of obliquus capitis inferior
Transverse processes of C1
Innervation of obliquus capitis inferior
Posterior rami of C1
Action of obliquus capitis inferior
Unilaterally: tilts head to one side and controlateral rotation
Bilaterally: extends head
Origin of obliquus capitis superior
Transverse process of C1
Insertion of obliquus capitis superior
In between inferior and superior nuchal lines
Innervation of obliquus capitis superior
Posterior rami of C1 subocciptial nerve
Action of obliquus capitis superior
Unilaterally: tilts head to one side and contralateral roation
Bilaterally: extends head
Origin of SCM
Anterior surface of manubrium of sternum
Superior surface of medial third of clavical
Insertion if SCM
Lateral surface of mastoid process and leteral half of superior nuchal line
Action of SCM
Unilaterally: tilts head to same side and contralateral rotation
Bilaterally: extends neck at atlanto-occitpial joint, flexes cervical vertebrae, extends superior cervical verrtebrae while flexing inferior vertebrae
May elevate clavical in deep breathing
Innervation of SCM
Cranial nerve 11, c2 and c3