Origins and insertions for muscle 2

What is the origin, insertion, and action for the external oblique?

Origin: Anterior surface of lower 8 ribs

Insertion: abdominal aponeurosis; iliac and pubic crest

Action: flexion and rotation of trunk; lateral flexion

What is the origin, insertion, and action for the internal oblique?

Origin: inguinal ligament; anterior iliac crest

Insertion: abdominal aponeurosis; pubic crest; costal cartilage of last 3 ribs

Action: flexion and rotation of trunk; lateral flexion

What is the origin, insertion, and action for the transverse abdominal?

Origin: inguinal ligament; iliac crest; costal cartilage of last 6 ribs

Insertion: abdominal aponeurosis; pubic crest

Action: compression of abdominal cavity

What is the origin, insertion, and action for the rectus abdominis?

Origin: pubic symphysis and crest

Insertion: costal cartilage of ribs 5-7 and xiphoid process

Action: flexion of trunk; compression of abdominal cavity.

What is the origin, insertion, and action for the gluteus maximus?

Origin: posterior ilium and sacrum

Insertion: gluteal tuberosity of femur and iliotibial tract

Action: extension of hip; lateral rotation and abduction of thigh

What is the origin, insertion, and action for the gluteus medius?

Origin: lateral surface of ilium

Insertion: greater trochanter of femur

Action: medial rotation and abduction of thigh

What is the origin, insertion, and action for the sartorius?

Origin: anterior surface of iliac spine

Insertion: medial, proximal shaft of tibia

Action: flexion, abduction, lateral rotation of thigh

What is the origin, insertion, and action for the psoas major?

Origin: lumbar vertebrae

Insertion: lesser trochanter of femur

Action: flexion, abduction, lateral rotation of thigh

What is the origin, insertion, and action for the iliacus

Origin: iliac fossa and crest

Insertion: lesser trochanter of femur

Action: flexion, abduction, lateral rotation of thigh

What is the origin, insertion, and action for the tensor fasciae latae?

Origin: ASIS and anterior iliac crest

Insertion: iliotibial tract

Action: extends knee, aids in abduction and medial rotation of thigh

What is the origin, insertion, and action for the biceps femoris?

Origin: linea aspera and ischial tuberosity

Insertion: head of fibula; lateral condyle of tibia

Action: hip extension; knee flexion

What is the origin, insertion, and action for the semimembranosus?

Origin: ischial tuberosity

Insertion: medial condyle of tibia; lateral condyle of femur

Action: hip extension; knee flexion

What is the origin, insertion, and action for the semitendinosus?

Origin: ischial tuberosity

insertion: medial, anterior, proximal shaft of tibia

Action: hip extension; knee flexion

What is the origin, insertion, and action for the rectus femoris?

Origin: Anterior inferior iliac spine, superior margin of acetabulum

Insertion: patella and tibial tuberosity

Action: knee extension: flexion of hip

What is the origin, insertion, and action for the vastus medialis?

Origin: Linea aspera; intertrochanter line

Insertion: patella and tibial tuberosity

Action: knee extension

What is the origin, insertion, and action for the vastus lateralis?

Origin: linea aspera; intertrochanter line

Insertion: patella and tibial tuberosity

Action: knee extension

What is the origin, insertion, and action for the vastus intermedius?

Origin: anterior and lateral shaft of femur

Insertion: patella and tibial tuberosity

Action: knee extension

What is the origin, insertion, and action for the Gracilis?

Origin: inferior ramus and body of pubis

Insertion: proximal medial tibia

Action: adduction of thigh; flexion, medial rotation of leg

What is the origin, insertion, and action for the Adductors?

Origin: inferior ramus and body of pubis; ischial tuberosity

Insertion: Linea aspera; gluteal tuberosity

Action: adduction, medial rotation of thigh

What is the origin, insertion, and action for the Gastrocnemius?

Origin: Medial, lateral condyles of femur

Insertion: Calcaneus via calcaneal tendon (achilles)

Action: Plantar flexion of ankle

What is the origin, insertion, and action for the Tibialis Anterior?

Origin: Lateral condyle and shaft of tibia

Insertion: First metatarsal; first cuneiform

Action: Dorsiflexion of ankle