Spine 2 - Muscles Flashcards
Anterior/Lateral Craniocervical Region
Flexion
Posterior Craniocervical Region
Extension
Sternocleidomastoid (Anterior/Lateral)
Flexion of Head
Ispislateral Lateral Flexion
CONTRAlateral rotation
Scalenes (x3) (Anterior/Lateral)
Lateral Flexion & Stability
Levator Scapulae (Anterior/Lateral)
Helps counteract anterior shear
Suboccipital (Anterior/Lateral)
Fine motor of AO & AA
Longus Coli (Anterior/Lateral)
Flexion
Stabilization
Longus Capitis (Anterior/Lateral)
Flexion
Stabilization
Splenius Cervicis (Posterior)
Extension
Splenius Capitis (Posterior)
Extension
Rotation
Posterior Muscles of the Trunk
Extended during bilateral contraction
Laterally flex during unilateral contraction
Erector Spinae (Posterior Trunk Muscles)
Prime Movers in Trunk Extension
Anterior Pelvic Tilt
Lateral Flexors
Transversospinals - semispinalis, multifidus, rotatores (Posterior Trunk Muscles)
Prime Movers in Trunk Extension
Multifidus
work with obliques during rotation to oppose the flexion moment produced
Anterior Trunk Muscles
Posterior pelvic tilt activates anterior trunk muscles