Muscle action Flashcards
TMJ depression
Lateral pterygoid, supra hyoid, infra hyoid
TMJ elevation
Temporalis, masseter, medial pterygoid
TMJ protrusion
Masseter, lateral pterygoid, medial pterygoid
TMJ retrusion
Temporalis, masseter, digastric
TMJ lateral movement
Medial pterygoid, lateral pterygoid, masseter, temporalis
Cervical flexion
SCM, longus colli, scalenus muscles
Cervical extension
Splenius cervicis, semispinalis cervicis, iliocostalis cervicis, longissimus cervicis, multifidus, trapezius
Cervical rotation and lateral flexion
SCM, scalenus, splenius cervicis, longissimus cervicis, iliocostalis cervicis, levator scapulae, multifidus
Thoracic and lumbar flexion
Rectus abdominis, internal oblique, external oblique
Thoracic and lumbar extension
Erector spinae, quadratus lumborum, multifidus
Thoracic and lumbar rotation and lateral flexion
Psoas major, quadratus lumborum, external oblique, internal oblique, multifidus, longissimus thoracis, iliocostalis thoracis, rotatores
Scapular elevation
Upper trapezius, levator scapulae
Scapula protraction
Serratus anterior, pec minor
Scapular upward rotation
Trapezius, serratus anterior
Scapular depression
Latissimus dorsi, pec major, pec minor, lower trap
Scapular retraction
Trapezius, rhomboids
Scapular downward rotation
Rhomboids, levator scapulae, pec minor