Muscle Action Flashcards
What muscles are responsible for depressing the jaw? (3)
Lateral pterygoid
Infrahyoid
Suprahyoid
What muscles are responsible for closing the jaw? (3)
Medial Pterygoid
Masseter
Temporalis
What muscles are responsible for protruding the jaw? (3)
Masseter
Lateral pterygoid
Medial pterygoid
What muscles are responsible for retrusion of the jaw? (3)
Temporalis
Masseter
Digastric
What muscles are responsible for medial and lateral deviation of the jaw? (4)
Medial pterygoid
Lateral pterygoid
Masseter
Temporalis
What muscles are responsible for cervical flexion? (3)
Sternocleidomastoid
Longus colli
Scalenes
What muscles are responsible for cervical extension? (6)
Splenius cervicis Semispinalis cervicis Iliocostalis cervicis Longissimus cervicis Multifidus Trapezius
What muscles are responsible for cervical rotation and side bending? (7)
Sternocleidomastoid Scalenes Splenius cervicis Longissimus cervicis Iliocostalis cervicis Levator scapulae Multifidus
What muscles are responsible for lumbar and thoracic flexion? (3)
Rectus abdominis
Internal Oblique
External oblique
What muscles are responsible for thoracic and lumbar extension? (3)
Erector spinae
Multifidus
Quadratus lumborum
What muscles are responsible for thoracic and lumbar rotation/lateral bending? (8)
Psoas major Quadratus lumborum External oblique Internal oblique Multifidus Longissimus thoracis Iliocostalis throacis Rotatores
What muscles are responsible for elevating the scapula? (2)
Upper trapezius
Levator scapulae
What muscles are responsible for depressing the scapula? (4)
Lower trapezius
Latissimus Dorsi
Pectoralis major
Pectoralis minor
What muscles are responsible for scapular protraction? (2)
Serratus anterior
Pectoralis minor
What muscles are responsible for scapular retraction? (2)
Rhomboids
Middle trapezius
What muscles are responsible for scapular upward rotation? (3)
Upper trapezius
Lower trapezius
Serratus anterior
What muscles are responsible for scapular downward rotation? (3)
Rhomboids
Levator scapulae
Pectoralis minor
What muscles are responsible for shoulder flexion? (4)
Anterior deltoid
Biceps brachii
Coracobrachialis
Pectoralis major (clavicular head)
What muscles are responsible for shoulder extension? (4)
Posterior deltoid
Triceps (long head)
Latissimus Dorsi
Teres major
What muscles are responsible for shoulder abduction? (2)
Supraspinatus
Middle deltoid
What muscles are responsible for shoulder adduction? (3)
Pectoralis major
Latissimus dorsi
Teres major
What muscles are responsible for shoulder horizontal abduction? (3)
Posterior deltoid
Infraspinatus
Teres minor
What muscles are responsible for shoulder horizontal adduction? (2)
Anterior deltoid
Pectoralis major