Spine and trunk muscles Flashcards
longus colli
O: anterior surface of Transverse processes of C3-5 AND anterior bodies of C5-T3
I: anterior arch of C1 and anterior bodies of C2-C4
A: bilaterally upper C-spine flexoin
unilateral anterior stability to C-spine
longus capitis
O: anterior surface of Transverse processes of C3-6
I: basilar part of occiptal bone
A: bilaterally upper C spine flexion
rectus capitits anterios
O: root of transverse process, anterior surface of atlas
I: interior surface of basilar part of occiput bone
A: cervical flexion, ipsilateral rotation
sternocleidomastoid
O: mastoid process
I: sternum (medial) and clavicular (lateral)
A: extension of upper C spine and flexion of lower C spine
unilaterally: contralateral rotation of the head and C spine
scalene anterior
O: TPs C3-C6
I: 1st rib
A: flecion of C spine, contralateral rotation of the head and C spine
scalene medius
O: TPs C2-C7
I: 1st rib, posterior to ant scalene
A: flexion of C spine, contralateral rotation of the head and C spine
scalene posterior
O: TP C5-C7
I: 2nd rib
A: extension. of C spine, contralateral rotation of the head and C spine
splenius capitis
O: SP’s C7-T4, ligamentum nuchae
I: mastoid process
A: extension of C spine, ipsilateral rotation of C spine
splenius cervicis
O: SP T3-T6
I: TP C1-C3
A:extension of C spine, ipsilateral rotation of C spine
semispinalis capitis
O: TPs
I: SP’s and nuchal line 6-8 levels up and occiput
A: extension of spine, contralateral rotation and ipsilateral lateral flexion
semispinalis cervicis
O: TPs
I: SP’s and nuchal line 6-8 levels up
A: extension of spine, contralateral rotation and ipsilateral lateral flexion
erector spinae: iliocostalis cervicis
O: ribs 3-7
I: TP of C4-6
A: extension, ipsilateral lateral flex and rotation of spine
erector spinae: longissimus cervicis
O: TP T1-5
I: TP C2-6
A: extension, ipsilateral lateral flexion and rotation of spine
erector spinae: spinalis cervicis
O: SPs and vertebral bodies
I: SPs and vertebral bodies
A: extension
multifidus
O: TPs
I: SPs 3-4 levels up
A: extension of spine, contralateral rotation, ipsilateral lateral flexion
rotatores
O: TPs
I: SP 1-2 levels up
A: extension of spine, contralateral rotation, ipsilateral lateral flexion
quadratus lumborum
O: iliac crest
I: L1-L4 transverse processes, 12th rib
A: thoracic/lumbar side bending, hip hiking
rectus abdominis
O: pubis symphasis
I: sternum and costal cartilages of ribs 5-7
A: flexion of trunk
external oblique
O: ribs 5-12
I: iliac crest and inguinal ligament
A: flexion of trunk, contralateral rotation of spine
internal oblique
O: iliac crest and inguinal ligament
I: pubis and linea alba via aponeurosis
A: flexion of trunk, ipsilateral rotation of spine
transverse abdominis
O: ribs 6-12, thoracolumbar fascia, iliac crest, inguinal ligament
I: pubis and linea alba via aponeurosis
A: flattens abdominal wall
psoas major and minor
O: All lumbar vertebrae & Transverse process
of T12
I: lesser trochanter of femur
A: hip flexion, trunk flexion
iliacus
O: iliac crest & iliac fossa
I:esser trochanter of femur & psoas
major
A: hip flexion
