Musculoskeletal System: Muscle Action Flashcards
TMJ Depression
Lateral pterygoid
Suprahyoid
Infrahyoid
TMJ Elevation
Temporalis
Masseter
Medial pterygoid
TMJ Protrusion
Masseter
Lateral pterygoid
Medial pterygoid
TMJ Retrusion
Temporalis
Masseter
Digastric
TMJ Side-to-Side
Ipsilateral Masseter
Ipsilateral Temporalis
Contralateral Medial pterygoid
Contralateral Lateral pterygoid
Cervical Flexion
SCM
Longus Colli
Scalene muscles
Cervical Extension
Splenius cervicis Semispinalis Iliocostalis Longissimus Multifidus Trapezius
Cervical Lateral Bending
SCM
Scalene muscles
Cervical Rotation
Ipsilateral Splenius Cervicis and Capitis
Contralateral Scalenes, SCM, and Upper Trapezius
Thoracolumbar Flexion
Rectus abdominis
Internal Oblique
External Oblique
Thoracolumbar Extension
Erector spinae
Quadratus lumborum
Multifidus
Thoracolumbar Lateral Bending
All Ipsilateral: External Oblique Internal Oblique Erector spinae QL Psoas Major (assists) Latissimus Dorsi (assists)
Thoracolumbar Rotation
Ipsilateral Internal Oblique
Contralateral External Oblique, Multifidi, and Rotatores
Scapula Elevation
Upper Trapezius
Levator Scapulae
Scapula Depression
Latissimus dorsi
Pectoralis Major and Minor
Lower trapezius
Scapula Protraction
Serratus anterior
Pectoralis minor
Scapula Retraction
Trapezius
Rhomboids
Scapula Upward Rotation
Upper Trapezius
Serratus anterior