Muscular System - Names, Origins, Insertions, Actions

Frontalis - Origin

Galea aponuerotica

Frontalis - Insertion

Skin around the eyebrows

Frontalis - Action

Raises eyebrows

Masseter - Origin

Zygomatic Arch

Masseter - Insertion

Ramus of mandible

Masseter - Action

Elevates jaw

Gluteus Maximus - Origin

Posterior ilium

Gluteus Maximus - Insertion

Gluteal tuberosity of femur

Gluteus Maximus - Action

Extends, laterally rotates, and abducts thigh

Semitendinosus - Origin

Ischial tuberosity

Semitendinosus - Insertion

Proximal tibia

Semitendinosus - Action

Extends thigh and flexes leg

Semimembranosus - Origin

Ischial tuberosity

Semimembranosus - Insertion

Medial condyle of tibia

Semimembranosus - Action

Extends thigh and flexes leg

Sartorius - Origin

Anterior superior iliac spine

Sartorius - Insertion

Proximal medial tibia

Sartorius - Action

Flexes leg and flexes and abducts hip

Gracilis - Origin

Pubic body

Gracilis - Insertion

Proximal medial tibia

Gracilis - Action

Flexes leg and medially rotates flexed leg

Vastus Medialis - Origin

Medial linea aspera of femur

Vastus Medialis - Insertion

Quadriceps tendon of base of patella

Vastus Medialis - Action

Extends leg at knee

Vastus Lateralis - Origin

Greater torchanter of femur

Vastus Lateralis - Insertion

Quadriceps tendon to base of patella

Vastus Lateralis - Action

Extends leg at knee

Gastrocnemius - Origin

Medial and lateral head of femur

Gastrocnemius - Insertion

Calcaneus

Gastrocnemius - Action

Plantar flexes foot

Soleus - Origin

Proximal surface of tibia and fibula

Soleus - Insertion

Posterior calcaneus

Soleus - Action

Plantar flexes foot