A+P Lab Lower Body Muscles

External Abdominal Oblique

External Abdominal Oblique Origin

Anterior surface of lower 8 ribs

External Abdominal Oblique Insertion

Abdominal aponeurosis

External Abdominal Oblique Action

Flexion and rotation of trunk

Internal Abdominal Oblique

Internal Abdominal Oblique Origin

Inguinal ligament

Internal Abdominal Oblique Insertion

Abdominal aponeurosis

Internal Abdominal Oblique Action

Flexion and rotation of trunk

Transverse Abdominis

Transverse Abdominis Origin

Inguinal ligament

Transverse Abdominis Insertion

Abdominal aponeurosis

Transverse Abdominis Action

Compression of abdominal cavity

Rectus Abdominis

Rectus Abdominis Origin

Pubic symphysis and crest

Rectus Abdominis Insertion

Xiphoid process

Rectus Abdominis Action

Compression of abdominal cavity

Gluteus Maximus

Gluteus Maximus Origin

Posterior ilium 

Gluteus Maximus Insertion

Iliotibial tract

Gluteus Maximus Action

Abduction of thigh

Gluteus Medius

Gluteus Medius Origin

Lateral surface of ilium

Gluteus Medius Insertion

Greater trochanter of femur

Gluteus Medius Action

Abduction of thigh

Sartorius

Sartorius Origin

Anterior superior iliac spine

Sartorius Insertion

Medial, proximal shaft of tibia

Sartorius Action

Flexion of thigh

Iliopsoas

Iliopsoas Origin

Psoas major

Iliopsoas Insertion

Lesser trochanter of femur

Iliopsoas Action

Flexion of thigh

Tensor Fasciae Latae

Tensor Fasciae Latae Origin

Anterior superior iliac spine

Tensor Fasciae Latae Insertion

Iliotibial tract

Tensor Fasciae Latae Action

Extension of knee

Biceps Femoris

Biceps Femoris Origin

Linea aspera

Biceps Femoris Insertion

Head of fibula

Biceps Femoris Action

Flexion of knee

Semimembranosus

Semimembranosus Origin

Ischial tuberosity

Semimembranosus Insertion

Medial condyle of tibia

Semimembranosus Action

Flexion of knee

Semitendinosus

Semitendinosus Origin

Ischial tuberosity

Semitendinosus Insertion

Medial, anterior, proximal shaft of tibia

Semitendinosus Action

Flexion of knee

Rectus Femoris

Rectus Femoris Origin

Anterior inferior iliac spine

Rectus Femoris Insertion

Tibial tuberosity

Rectus Femoris Action

Extension of knee

Vastus Medialis

Vastus Medialis Origin

Linea aspera

Vastus Medialis Insertion

Tibial tuberosity

Vastus Medialis Action

Extension of knee

Vastus Lateralis

Vastus Lateralis Origin

Linea aspera

Vastus Lateralis Insertion

Tibial tuberosity

Vastus Lateralis ( Action

Extension of knee

Vastus Intermedius

Vastus Intermedius Origin

Lateral shaft of femur

Vastus Intermedius Insertion

Tibial tuberosity

Vastus Intermedius Action

Extension of knee

Gracilis

Gracilis Origin

Body of pubis

Gracilis Insertion

Proximal medial tibia

Gracilis Action

Adduction of thigh

Adductors

Adductors Origin

Body of pubis

Adductors Insertion

Linea aspera

Adductors Action

Adduction of thigh

Gastrocnemius

Gastrocnemius Origin

Medial condyles of femur

Gastrocnemius Insertion

Calcaneus

Gastrocnemius Action

Plantarflexion of ankle

Tibialis Anterior

Tibialis Anterior Origin

Lateral condyle of tibia

Tibialis Anterior Insertion

First metatarsal

Tibialis Anterior Action

Dorsiflexion of ankle