Human Movement Science Flashcards
Medial deltoid
Accelerates shoulder abduction
Anterior deltoid
Accelerates shoulder flexion and internal rotation
Posterior deltoid
Accelerates shoulder extension and external rotation
Teres Major
Accelerates shoulder internal rotation, adduction, and extension
Teres Minor
Accelerates shoulder external rotation
Subscapularis
Accelerates shoulder internal rotation
Supraspinatus
Accelerates abduction of the arm
Biceps Brachii
Accelerates elbow flexion, supination of the radioulnar joint, and shoulder flexion
Triceps Brachii
Accelerates elbow extension and shoulder extension
Brachioradialis / Brachialis
Elbow flexion
Levator Scapulae
Cervical extension, lateral flexion, and ipsilateral rotation when the scapulae is anchored. Assists with elevation and downward rotation of the scapulae
Pectoralis minor
Protracts the scapula
Pectoralis major
Accelerates shoulder flexion, horizontal adduction, and internal rotation
Upper Trapezius
Cervical extension, lateral flexion, and rotation.
Also accelerates scapular elevation
Lower/middle trapezius
Scapular depression
Rhomboid major/minor
Produces scapular retraction and downward rotation
Serratus Anterior
Accelerates scapular protraction
Latissimus Dorsi
Shoulder extension, adduction, and internal rotation
Superficial Erector Spinae
Spinal extension, rotation, and lateral flexion
*stabilizes the spine during functional movements
Diaphragm
Pulls the central tendon inferiorly, increasing the volume in the thoracic cavity
Piriformis
Hip external rotation, abduction, and extension
Iliacus
Hip flexion and external rotation
Psoas
Hip flexion and external rotation
Extends and rotates lumbar spine
Gluteus Maximus
Hip extension and external rotation
Gluteus Medius
Hip abduction and internal rotation
(Anterior fibers)
Hip abduction and external rotation (posterior fibers)
Adductor Longus (inner thigh)
Hip adduction, flexion and internal rotation
Vastus Medialis (VMO)
Knee extension
Quadriceps (vastus lateralis)
Knee extension
Biceps Femoris (long head)
Knee flexion and hip extension
Tibial external rotation
Gastrocnemius
Accelerates plantarflexion
Soleus
Accelerates plantarflexion
Posterior Tibialis
Plantarflexion and inversion of the foot
Anterior Tibialis
Dorsiflexion and inversion