Muscles (Origin, Insertion, Action)

Orbicularis Oculi

Origin- lacrimal, frontal, maxilla

Orbicularis Oculi

insertion- eyelids

Orbicularis Oculi

action- close eye, wink

Orbicularis Oris

origin- N/A

Orbicularis Oris

Insertion- Lips

Orbicularis Oris

Action- pucker lips

Sternocleidomastoid

Origin- clavicle and sternum 

Sternocleidomastoid

insertion- mastoid process of temporal bone

Sternocleidomastoid

action- flex neck, bend, turn head

latissimus dorsi

origin- thoracic and lumbar vertebrae, ribs 8-12

latissimus dorsi

insertion- humorous (intertubercular groove)

latissimus dorsi

action- extension of shoulder, adduction of arm

Deltoid

origin- clavicle and scapula

Deltoid

insertion- humorous (deltoid tuberosity)

Deltoid

action- abduction of shoulder, flexion and extension of shoulder

Pectoralis Major

origin- ribs 2-6, sternum, clavicle

Pectoralis Major

insertion- humorous (greater tubercle) 

Pectoralis Major

action- flexion of arm, adduction of arm

Rectus Abdominis

origin- pubic bone

Rectus Abdominis

insertion- ribs 5-7, xiphoid process

Rectus Abdominis

action- flexion of spine

Triceps brachii

origin- humorous

Triceps Brachii

insertion- ulna (olecranon)

Triceps Brachii

action- extension of elbow

Biceps Brachii

origin- scapula

Biceps Brachii

insertion- radius (radial tuberosity)

Brachioradialis

origin- humorous

Brachioradialis

insertion- radius (styloid process)

Brachioradialis

action- flexion of the elbow

Rectus Femoris (quadriceps)

origin- ilium

Rectus Femoris (quadriceps)

insertion- tibial tuberosity (via patellar ligament)

Rectus Femoris (quadriceps)

action- extension of the knee and flexion of the hip

Vastus Medialis (quadriceps)

origin- femur

Vastus Medialis (quadriceps)

insertion-tibial tuberosity (via patellar ligament)

Vastus Medialis (quadriceps)

action- extension of the knee

Vastus Lateralis (quadriceps)

origin- greater trochanter of the femur

Vastus Lateralis (quadriceps)

insertion-tibial tuberosity (via patellar ligament)

Vastus Lateralis (quadriceps)

action- extension of the knee

Biceps Femoris (hamstring)

ischial tuberosity, femur

Biceps Femoris (hamstring)

insertion- fibula, tibia 

Biceps Femoris (hamstring)

action- flexion of knee, extension of knee

Semitendinosus

origin- ischial tuberosity, femur

Semitendinosus

insertion- tibia

Semitendinosus

action- flexion of the knee, extension of the knee

Gastrocnemius

origin- femoral condyles femur (distal)

Gastrocnemius

insertion- calcaneus via calcaneal tendon

Gastrocnemius

action- plantar flexion of foot at ankle 

Soleus

origin- fibula, tibia

Soleus

insertion- calcaneus via calcaneal tendon

Soleus

action- plantar flexion of foot at ankle

Tibialis anterior

origin- tibia

Tibialis anterior

insertion- 1st metatarsal and cuneiform

Tibialis anterior

action- dorsiflexion of foot at ankle