Primary Muscles - Action and Insertion Flashcards
Scapula Depression
Lower Trapezius
Insertion: Spine of scapula
Scapula Elevation
Levator Scapulae
Insertion: Superior angle of the scapula
Scapula Retraction
Middle Trapezius
Insertion: Acromion
Scapula Protraction
Serratus Anterior
Insertion: Medial margin of the scapula
Scapula Upwards Rotation
Serratus Anterior
Insertion: Medial margin of the scapula
Scapula Downwards Rotation
Levator Scapulae
Insertion: Superior angle of the scapula
Shoulder Abduction
Middle Deltoid
Insertion: Deltoid tuberosity
External Rotation of the Shoulder
Infraspinatus
Insertion: Greater tubercle of the humerus
Internal Rotation of the Shoulder
Subscapularis
Insertion: Lesser tubercle of the humerus
Shoulder Flexion
Anterior Deltoid
Insertion: Deltoid tuberosity
Shoulder Extension
Posterior Deltoid
Insertion: Deltoid tuberosity
Horizontal Abduction of the Shoulder
Posterior Deltoid
Insertion: Deltoid tuberosity
Horizontal Adduction of the Shoulder
pec major
Insertion: Lateral margin of the bicipital groove
Shoulder Adduction
Pec major
Insertion: Lateral margin of the bicipital groove
Elbow Flexion
Biceps Brachii (supination)
Insertion: Radial tuberosity, and bicipital aponeurosis
Brachioradialis (Thumbs up)
Insertion: Styloid process of the radius
Elbow Extension
Triceps Brachii
Insertion: Olecranon
Forearm Pronation
Pronator teres
Insertion: Lateral surface of the radius
Forearm Supination
Biceps brachii
Insertion: Radial tuberosity, and bicipital aponeurosis
Wrist Flexion
Palmaris longus
Insertion: Palmar aponeurosis
Wrist Extension
Extensor carpi ulnaris
Insertion: Base metacarpal V
Ulnar Deviation
Extensor carpi ulnaris
Insertion: Base metacarpal V
Radial deviation
Extensor carpi radialis longus
Insertion: Dorsal surface of metacarpal II
Finger Extension
Extensor digitorum
Insertion: Medial and distal phalanges II-V via dorsal aponeurosis
Finger Flexion
Flexor digitorum superficialis
Insertion: Middle phalanges II-V
Thumb Extension
Extensor pollicis longus
Insertion: Base phalanx distal I
Thumb Flexion
Flexor pollicis longus
Insertion: Palmar surface of the distal phalanx I
Opposition
Opponens
Insertion: Radial border metacarpal I
Ankle Plantar Flexion
Gastrocnemius
Insertion: Calcaneal tuberosity via the Achilles tendon
Soleus (knee flexion)
Insertion: Achilles Tendon
Ankle Dorsi Flexion
Tibialis Anterior
Insertion: Medial cuneiform and first metatarsal
Subtalar Eversion
Fibularis longus
Insertion: Base of metatarsal 1 and medial cuneiform
Subtalar Inversion
Tibialis anterior
Insertion: Medial cuneiform and first metatarsal
Interphalangeal Flexion
Flexor digitorum longus
Insertion: Bases of the distal phalanges 2-5
Interphalangeal Extension
Extensor digitorum longus
Insertion: Middle and distal phalanges of toes II-V
Hip Flexion
Iliopsoas
Insertion: Lesser trochanter
Hip Extension
Gluteus Maximus
Insertion:
Upper fibers: iliotibial tract on Gerdy’s tubercle (tibia)
Lower fibers: gluteal tuberosity of femur
Hip Abduction
Gluteus Medius
Insertion: Greater trochanter
Hip Adduction
Adductor longus
Insertion: Lower two-thirds of the medial lip of the linea aspera on the posterior surface
Hip Internal Rotation
Gluteus medius
Insertion: Greater trochanter
Hip External Rotation
Gluteus Maximus
Insertion:
Upper fibers: iliotibial tract on Gerdy’s tubercle (tibia)
Lower fibers: gluteal tuberosity of femur
Knee Flexion
Biceps Femoris I: Head of fibula Semitendinosus I: Medial border of the tibia (pes anserinus tendon) Semimembranosus I: Medial tibial condyle
Knee Extension
Rectus Femoris
I: Anterior Tibial Tuberosity (Quadriceps tendon)