Unit 1 Second Order MIRS

AHS 3415/8415 Second Order Information for Unit 1 Exam

Latissimus dorsi origin

Thoracic and Lumbar vertebrae, thoracolumbar fascia, ilium, ribs, and scapula

Levator scapulae origin

cervical vertebrae

Rhomboid major origin

thoracic vertebrae

Rhomboid minor origin

nuchal ligament, cervical and thoracic vertebrae

serratus posterior inferior origin

thoracic and lumbar vertebrae

serratus posterior superior origin

nuchal ligament, cervical and thoracic vertebrae

trapezius origin

occipital bone, nuchal ligament, supraspinous ligaments and cervical and thoracic vertebrae

erector spinae m group origins

ilium, sacrum, sacro-iliac ligaments, lumbar vertebrae, supraspinous ligament

semispinalis capitis origin

cervical and thoracic vertebrae

semispinalis cervicis origin

thoracic vertebrae

semispinalis thoracis origin

thoracic vertebrae

splenius capitis origin

cervical and thoracic vertebrae

splenius cervicis origin

thoracic vertebrae

multifidus origin

sacrum, ilium, common origin tendon or erector spinae, sacro-iliac ligaments, lumbar vertebrae, thoracic vertebrae, and cervical vertebrae

rotatores brevis/longus origin

vertebrae

levator costarum origin

cervical and thoracic vertebrae

intertransversarii origin

between adjacent cervical and lumbar vertebrae

interspinales origin

cervical and lumbar vertebrae

obliquus capitis inferior origin

axis/C2

obliquus capitis superior origin

atlas/C1

rectus capitis posterior major origin

axis/C2

rectus capitis posterior minor origin

atlas/C1

latissimus dorsi insertion

humerus

levator scapulae insertion

scapula

rhomboid major insertion

scapula

rhomboid minor insertion

scapula

serratus posterior inferior insertion

ribs 9-12

serratus posterior superior insertion

ribs 2-5

trapezius insertion

clavicle and scapula

spinalis cervicis insertion

cervical vertebrae

spinalis thoracis insertion

thoracic vertebrae

longissimus capitis insertion

temporal bone

longissimus cervicis insertion

cervical vertebrae

longissimus thoracis insertion

thoracic vertebrae and ribs

iliocostalis group insertions

cervical vertebrae and lower ribs

semispinalis capitis insertion

occipital bone

semispinalis cervicis insertion

cervical vertebrae

semispinalis thoracis insertion

cervical and thoracic vertebrae

splenius capitis insertion

temporal bone and occipital bone

splenius cervicis insertion

cervical vertebrae

multifidus insertion

vertebrae 2-4, superior to its origins

rotatores brevis/longus insertion

the vertebra that is one (brevis) or two (longus) levels above the origin vertebra

levatores costarum insertion

cervical and thoracic vertebrae

intertransversarii insertion

between adjacent cervical and lumbar vertebrae

interspinales insertion

cervical and lumbar vertebrae

obliiquus capitis inferior insertion

C1/Atlas

Obliquus capitis superior insertion

occipital bone

rectus capitis posterior major insertion

occipital bone

rectus capitis posterior minor insertion

occipital bone

Latissimus dorsi function

extends, adducts, and medially rotates arm, assists in respiration

levator scapulae function

elevates and inferiorly rotates scapula, bilateral contraction= extends the neck, unilateral contraction= lateral flexion of neck

rhomboid major and minor functions

retracts, elevates, inferiorly rotates scapula, stabilizes scapula against thoracic wall

serratus posterior inferior function

depresses ribs for forced expiration

serratus posterior superior function

elevates ribs for forced inhalation

trapezius function

dress (Depresses, Retracts, Elevates, Superiorly rotates Scapula)

spinalis cervicis function

extends vertebral column

spinalis thoracis function

extends vertebral column

longissimus capitis function

bilateral contraction: extend head, unilateral contraction: ipsilaterally rotates head

longissimus cervicis function

unilateral contraction: lateral flexion of vertebral column, bilateral contraction: extension and stabilization of vertebral column

iliocostalis groups function

unilateral contraction: lateral flexion of vertebral column, bilateral contraction: extension and stabilization of vertebral column

semispinalis groups function

unilateral contraction: contralateral rotation of head and vertebral column, bilateral contraction: extends head and vertebral column

splenius capitis function

unilateral contraction: lateral flexion and ipsilateral rotation of head, bilateral contraction: extension of head

splenius cervicis function

unilateral contraction: lateral flexion and ipsilateral rotation of the cervical spine, bilateral contraction: extension of the cervical spine

multifidus function

stabilize vertebrae during local movements of vertebral column

rotatores brevis/longus function

stabilizes the vertebrae and assists with local extension and rotatory movements of the vertebral column, may have some proprioceptive function

levatores costarum function

elevates ribs, assists in respiration, assists with lateral flexion of vertebral column

intertransversarii function

unilateral contraction: aids in lateral flexion of vertebral column, bilateral contraction: stabilizes vertebral column

interspinales function

aids in extension and rotation of vertebral column

obliquus capitis inferior function

rotates head to the same side of contraction (ipsilaterally)

obliquus capitis superior function

bilateral contraction: extends head, unilateral contraction: laterally flexes head

rectus capitis posterior major function

bilateral contraction: extends head, unilateral contraction: rotates head to the same side as contraction (ipsilaterally)

rectus capitis posterior minor function

extends head

Latissimus dorsi INN

thoracodorsal N

levator scapulae INN

dorsal scapular N

rhomboid major INN

dorsal scapular N

rhomboid minor INN

dorsal scapular N

serratus posterior inferior INN

dorsal scapular N

serratus posterior superior INN

anterior rami of T9-T12 spinal nerves

trapezius INN

anterior rami of T2-T5 spinal nerves

spinalis cervicis and spinalis thoracis INN

spinal accessory nerve (CN XI), C3-C4 spinal nerves

longissimus group INN

dorsal rami of cervical and thoracic spinal NN

iliocostalis group INN

posterior/dorsal rami of cervical, thoracic, and lumbar spinal NN

semispinalis group INN

posterior/dorsal rami of cervical and thoracic spinal nerves

splenius capitis and cervicis INN

posterior/dorsal rami of middle cervical spinal nerves

multifidus INN

posterior/dorsal rami of cervical, thoracic, and lumbar spinal nerves

rotatores brevis/longus INN

posterior/dorsal rami of cervical, thoracic, and lumbar spinal nerves

levatores costarum INN

posterior/dorsal rami of spinal nerves

intertransversarii INN

posterior/dorsal rami of spinal nerves

interspinales INN

posterior/dorsal rami of spinal nerves

obliquus capitis inferior INN

suboccipital nerve (posterior ramus of C1)

obliquus capitis superior INN

suboccipital nerve (posterior ramus of C1)

rectus capitis posterior major INN

suboccipital nerve (posterior ramus of C1)

rectus capitis posterior minor INN

suboccipital nerve (posterior ramus of C1)