Medial Thigh: Obturator

Question 1

Name this muscle

Answer 1

Gracilis
O: the body and inferior ramus of pubis
A: adduction of hip joint; flexion and medial (internal ) rotation of the knee joint
Nerve: obturator nerve
Insert: medial surface of superior tibia via pes anserinus (middle)

Question 2

Name and list

Answer 2

Adductor Longus
O: body of the pubis
A: adduction of hip joint
Nerve: obturator nerve
Insert: middle 1/3 of linea aspera of femur

Question 3

Name and list

Answer 3

Adductor Brevis
O: body and inferior ramus of pubis
A: adduction of hip joint, assists with flexion of hip joint
Nerve: obturator nerve
Insert: pectineal line and linea aspera (proximally)

Question 4

Name and list

Answer 4

Adductor Magnus
O: (adductor part) inferior ramus of pubis & ramus of ischium (hamstring part) ischial tuberosity
A: adduction and flexion of hip joint; extension of hip joint
Nerve: (adductor part) obturator nerve; (hamstring part) tibial nerve
Insert: (adductor part) gluteal tuberosity; (hamstring part) adductor tubercle of femur

Question 5

Name and list

Answer 5

Obturator Externus
O: margins of obturator foramen and obturator membrane
A: external (lateral rotation) of hip joint; stabilizes head of femur in the acetabulum
Nerve: obturator nerve
Insert: trochanteric fossa of femur