Axial Muscles Flashcards
SERRATUS POSTERIOR: INFERIOR
O - Lower Thoracic and Upper Lumbar SP
I - Lower Ribs
A - Depresses Ribs
N - Intercostal Nerves T9-T12
SPLENIUS CAPITIS
O - Cervical and Upper Thoracic SP
I - Mastoid Process and Superior Nuchal Line
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami of Inferior Cervical Nerves
SPLENIUS CERVICIS
O - Upper Thoracic SP
I - Upper Cervical TP
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami of Inferior Cervical Nerves
SERRATUS POSTERIOR: SUPERIOR
O - Lower Cervical and Upper Thoracic SP
I - Upper Ribs
A - Elevates ribs
N - Intercostal Nerves T1-T3
RECTUS ABDOMINUS
O - Ribs 5-7; Xiphoid Process
I - Pubic Ramus
A - Flexion
N - Intercostal Nerves T7-T12
EXTERNAL OBLIQUE
O -Posterolateral Ribs 5-12
I - Iliac Crest; Linea Alba
A - Flexion; Ipsilateral Lateral Flexion; Contralateral Rotation
N - Intercostal Nerves T7-T12
INTERNAL OBLIQUE
O - Iliac Crest; Thoracolumbar Fascia
I - Linea Alba; Inferior Ribs
A - Flexion; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Intercostal Nerves T7-T12
TRANSVERSE ABDOMINUS
O - Ribs 7-12; Thoracolumbar Fascia; Iliac Crest
I - Linea Alba
A - Support Abdominal Wall; Compress Abdomen
N - Intercostal Nerves T7-T12
ILIOCOSTALIS LUMBORUM
O - Iliac Crest
I - Angles of Lower Ribs
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
ILIOCOSTALIS THORACIS
O - Angles of Lower Ribs
I - Angles of Upper Ribs
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
ILIOCOSTALIS CERVICIS
O - Angles of Upper Ribs
I - Lower Cervical TP
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
LONGISSIMUS THORACIS
O - Lumbar TP
I - Thoracic TP; Lower 9 Ribs
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
LONGISSIMUS CERVICIS
O - Upper Thoracic TP
I - Cervical TP
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
LONGISSIMUS CAPITIS
O - Upper Thoracic and Lower Cervical TP
I - Mastoid Process
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
SPINALIS THORACIS
O - Upper Lumbar and Lower Thoracic SP
I - Upper Thoracic SP
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
SPINALIS CERVICIS
O - Lower Ligamentum Nuchae
I - Axis SP
A - Extension; Ipsilateral Lateral Flexion; Ipsilateral Rotation
N - Dorsal Rami
MULTIFIDUS
O - Sacrum, Lower Lumbar to Lower Cervical TP
I - SP of Vertebrae 2-5 Superior
A - Extension; Ipsilateral Lateral Flexion; Contralateral Rotation
N - Dorsal Rami
ROTATORES
O - Lumbar to Cervical TP
I - BREVIS: Lumbar to Cervical SP of Adjacent Superior Vertebrae
LONGUS: Lumbar to Cervical SP of Vertebrae 2 Levels Superior
A - Extension; Ipsilateral Lateral Flexion; Contralateral Rotation
N - Dorsal Rami
INTERSPINALIS
O - Lumbar to Cervical SP
I - Lumbar to Cervical SP of Adjacent Superior Vertebrae
A - Extension
N - Dorsal Rami
SEMISPINALIS THORACIS/CERVICIS/CAPITIS
O/I: Thoracis: Lower Thoracic TP -> Upper Thoracic and Lower Cervical SP
Cervicis: Upper Thoracic TP -> Cervical SP
Capitis: Upper Thoracic and Lower Cervical TP -> Occipital Bone
A - Extension; Ipsilateral Lateral Flexion; Contralateral Rotation
N - Dorsal Rami
SEMISPINALIS CAPITIS
O - TPs
I - SPs 5 to 8 vertebrae above origin (travels superior and medial)
A - head/neck extension; contralateral rotation
N - Post rami of spinal nerves
QUADRATUS LUMBORUM
O: Upper lumbar TPs; 12th rib
I: Iliac crest
A: Extension; Ipsilateral lateral flexion
N: T12 upper lumbar ventral rami
INTERTRANSVERSARII
O: Lumbar to cervical TPs
I: Lumbar to cervical TPs of adjacent superior vertebrae
A: Ipsilateral lateral flexion
N: Dorsal rami
RECTUS CAPITIS POSTERIOR MINOR
O: posterior arch of atlas
I: inferior nuchal line
A: extension; ipsilateral rotation
N: suboccipital nerve
RECTUS CAPITIS POSTERIOR MAJOR
O: axis SP
I: inferior nuchal line
A: extension; ipsilateral rotation
N: suboccipital nerve
OBLIQUUS CAPITIS SUPERIOR
O: Atlas TP
I: occipital bone
A: extension; ipsilateral lateral flexion
N: suboccipital nerve
OBLIQUUS CAPITIS INFERIOR
O: axis SP
I: Atlas TP
A: Ipsilateral rotation
N: suboccipital nerve
ANTERIOR SCALENE
O: C3-C6 TP
I: 1st rib
A: flexion, IPSI lat flexion, CONT rotation
N: C3-C8 ventral rami
MIDDLE SCALENE
O: C2-C7 TP
I: 1st rib
A: IPSI lat flexion, CONT rotation
N: C3-C8 ventral rami
POSTERIOR SCALENE
O: C5-C6 TP
I: 2nd rib
A: IPSI lat flexion, CONT rotation
N: C3-C8 ventral rami