Muscles of the Medial Thigh (adductors of the Thigh)

Question 1

Adductor Longus M.

Answer 1

Origin: Body of the pubis & inferior ramus of the pubis

Insertion: Middle 1/3 of the linea aspera

Innervation: Obturator Nerve (L3)

Action: adducts the thigh and medially rotates (a little)

Question 2

Adductor Brevis M.

Answer 2

Origin: Body of the pubis & inferior ramus of the pubis

Insertion: Pectineal line of the femur & proximal end of the line aspera

Innervation: Obturator Nerve (L3)

Action: Adductor of the thigh (little)

Question 3

Adductor Magnus (Adductor Portion) M.

Answer 3

Origin: Body of pubis & inferior ramus of pubis

Insertion: gluteal tuberosity of the femur & linea aspera

Innervation: Obturator Nerve (L3, L4)

Action: Adducts the thigh

Question 4

Adductor Magnus (Hamstring Part) M.

Answer 4

Origin: Ischial tuberosity

Insertion: adductor tubercle of the femur (distal)

Innervation: Tibial part of the sciatic nerve (L4)

Hamstring Part: Extend the thigh

Question 5

Gracilis M.

Answer 5

Origin: Body of Pubis & Inferior Ramus of Pubis

Insertion: Superior Part of Medial Part of Tibia

Innervation: Obturator Nerve (L2,L3)

Action: adducts the thigh, rotates leg medially

Question 6

Obturator Externus M.

Answer 6

Origin: obturator membrane & obturator foramen (obturator membrane inside obturator foramen)

Insertion: Trochanteric Fossa of Femur

Innervation: Obturator nerve (L3, L4)

Action: Laterally rotate thigh, steadily keeps the head of femur in acetabulum