Spine Flashcards
Splenius Capitus Origin
SP C7-T4, lower 1/2 ligamentum nuchae
Splenius Capitus Insertion
mastoid process, occipital bone below lateral 1/3 of superior nuchal line
Splenius Capitus Innervation
Dorsal Rami C1-C6
Splenius Capitus Action
Capital extension, SB/Rot same side
Splenius Cervicis Origin
SP T3-T6
Splenius Cervicis Insertion
TP C1-C3
Splenius Cervicis Innervation
Dorsal Rami C4-C8
Splenius Cervicis Action
Cervical extension, SB/Rot same side
Iliocostalis Lumborum Origin
Common origin of erector spinae. Iliac crest, sacrum, SP T12-L5.
Iliocostalis Lumborum Insertion
lower 6-7 ribs, TP L1-L5
Iliocostalis Lumborum Innervation
Dorsal Rami L1-L5
Iliocostalis Lumborum Action
lumbar extension, SB same side, pelvis elevation, rib depression
Iliocostalis Thoracis Origin
Ribs 7-12
Iliocostalis Thoracis Insertion
Ribs 1-6 & TP C7
Iliocostalis Thoracis Innervation
Dorsal Rami T1-T12
Iliocostalis Thoracis Action
Extension/SB same side of thoracic spine
Iliocostalis Cervicis Origin
Ribs 3-6
Iliocostalis Cervicis Insertion
PTTP C4-C6
Iliocostalis Cervicis Innervation
Dorsal Rami C4-T3
Iliocostalis Cervicis Action
Cervical extension and SB same side
Longissimus Thoracis Origin
TP/Accessory process L1-L5
Longissimus Thoracis Insertion
TP T1-T12, ribs 2-12
Longissimus Thoracis Innervation
Dorsal Rami T1-L1
Longissimus Thoracis Action
Extension/SB same side of thoracic spine
Longissimus Cervicis Origin
TP T1-T5
Longissimus Cervicis Insertion
PTTP C2-C6
Longissimus Cervicis Innervation
Dorsal Rami C3-T3
Longissimus Cervicis Action
Extension/SB same side of cervical spine
Longissimus Capitis Origin
TP T1-T5 & Articular process C4-C7
Longissimus Capitis Insertion
Mastoid process
Longissimus Capitis Innervation
Dorsal Rami C3-C8
Longissimus Capitis Action
Capital Extension/SB same side/ IL rot
Spinalis Thoracis Origin
SP T11-L2
Spinalis Thoracis Insertion
SP T1-4 or 8
Spinalis Thoracis Innervation
Dorsal Rami T1-T12
Spinalis Thoracis Action
Thoracic extension
Spinalis Cervicis Origin
SP C6/7, inferior ligamentum nuchae
Spinalis Cervicis Insertion
SP C2/3
Spinalis Cervicis Innervation
Dorsal Rami C3-C8
Spinalis Cervicis Action
Cervical extension, IL SB, CL rot
Spinalis Capitis Origin
SP C5-T3
Spinalis Capitis Insertion
Occiput between the superior/inferior nuchal lines
Spinalis Capitis Innervation
Dorsal Rami C2-T1, greater occipital nerve
Spinalis Capitis Action
Capital extension, IL SB, CL rot
Multifidus Origin
Sacrum, aponeurosis of erector spinae
Multifidus Insertion
SP of vertebrae 2-4 segments above (L5-C2), ilium, mamillary process L1-L5, TP T1-12, articular process C4-C7
Multifidus Innervation
Dorsal Rami - not specified
Multifidus Action
Spinal extension, IL SB, CL rot
Thoracic Rotatores Origin/Insertion
TP of vertebrae to SP of vertebrae 1-2 seg above.
Thoracic Rotatores Innervation
Dorsal Rami T1-T12
Thoracic Rotatores Action
Thoracic extension, CL rotation
Lumbar Rotatores Origin/Insertion
TP of vertebrae to SP of vertebrae 1-2 seg above.
Lumbar Rotatores Action
Lumbar extension and CL rotation
Lumbar Rotatores Innervation
Dorsal Rami L1-L5
Interspinalis Origin/Insertion
SP to TP of consecutive vertebrae
Interspinalis Lumborum Innervation/Action
Dorsal Rami L1-L5, Lumbar extension
Interspinalis Thoracis Innervation/Action
Dorsal Rami T1-T12, Thoracic extension
Intertransversarii Origin/Insertion
SP to TP of consecutive vertebrae
Intertransversarii Thoracis Innervation
Dorsal Rami T1-L5
Intertransversarii Thoracis Action
Thoracic extension, IL SB, CL rot
Intertransversarii Lumborum (Medial) Innervation
Dorsal Rami, lumbar/sacral nerves
Intertransversarii Lumborum (Medial) Action
Lumbar SB
Intertransversarii (Lateral) Innervation
Ventral Rami, lumbar and sacral nerves
Intertransversarii (Lateral) Action
Lumbar extension, postural stabilization
External Oblique Origin
Ribs 5-12
External Oblique Insertion
Aponeurosis to linea alba, anterior 1/2 iliac crest, pubic tubercle
External Oblique Action
Trunk flexion, posterior pelvic tilt, CL trunk rot, SB same
External Oblique Innervation
T7-12 spinal nerves
Internal Oblique Origin
TCLF, Anterior 2/3 iliac crest, inguinal lig
Internal Oblique Insertion
RIbs 9-12, costal cartilage ribs 7-9, aponeurosis to linea alba, pubic crest, pectin pubis vis conjoint tendon
Internal Oblique Action
Trunk flexion, posterior pelvic tilt, IL trunk rot, SB same
Internal Oblique Innervation
T7-12 spinal nerves, L1 spinal nerve
Transversus Abdominus Origin
Ribs 7-12 (costal cart), TCLF, anterior 2/3 iliac crest
Transversus Abdominus Insertion
Aponeurosis to linea alba, pubic crest, and pectin pubis via conjoint tendon
Transversus Abdominus Innervation
T7-12 spinal nerves, L1 spinal nerve
Transversus Abdominus Action
Constricts abdomen, forced expiration
Rectus Abdominus Origin
Pubic symphysis, pubic tubercle
Rectus Abdominus Insertion
Ribs 5-7 (costal cartilage), xiphoid process
Rectus Abdominus Innervation
T7-12 spinal nerves
Rectus Abdominus Action
Flexes trunk, posterior pelvic tilt
Anterior Scalene Origin
anterior tubercles of TP C3-C6
Anterior Scalene Insertion
scalene tubercle and upper surface of 1st rib
Anterior Scalene Action
elevates the first rib; may act in reverse to lateral bend the neck to the same side; rotation of cervical spine to same side; acting bilaterally, flexes the cervical spine
Anterior Scalene Innervation
Ventral rami C4-C6
Middle Scalene Origin
Posterior tubercles of transverse processes of C2-C7 and sometimes the atlas
Middle Scalene Insertion
Superior surface of first rib
Middle Scalene Action
lateral bending of cervical spine to same side; cervical rotation to same side; elevates 1st rib during forced inspiration (cervical flexion- weak)
Middle Scalene Innervation
Ventral rami of C3-C8
Posterior Scalene Origin
posterior tubercles of transverse processes of C4-C6
Posterior Scalene Insertion
external border of 2nd rib
Posterior Scalene Action
ventral rami of C6-C8
Posterior Scalene Innervation
: elevates 2nd rib during forced inspiration; cervical spine rotation to same side; lateral bending of cervical spine to same side (accessory); (cervical flexion- weak)
SCM
O: Manubrium, Medial Clavicle
I: Mastoid Process
N: Accessory (spinal part)
A: Extends head, flexes neck at Cspine, SB same, rotates head IL.
Longus Colli
Cervical flexion (weak), Cervical rot IL, MAY laterally flex
Longus Colli
Ventral Rami C2-C6 spinal nerves