Medial thigh muscles: DEEP

Question 1

Insertion of obturator externus?

Answer 1

Trochanteric fossa of femur

Question 2

Innervation of obturator externus?

Answer 2

Obturator n.

L3, L4

Question 3

Action of obturator externus?

Answer 3

Hip joint: adduction and external rotation

Stabilizes pelvis in sagittal plane

Question 4

Origin of adductor magnus?

Answer 4

Inferior pubic ramus, ischial ramus, ischial tuberosity

Question 5

Insertion of adductor magnus?

Answer 5

Deep part (Adductor): (fleshy insertion): medial lip of linea aspera
Superficial part (Hamstring): (tendinous insertion): adductor tubercle of femur

Question 6

Innervation of adductor magnus?

Answer 6

Deep part: obrtuator n. (L2-L4)

Superficial part: tibial n. (L4)

Question 7

Action of adductor magnus?

Answer 7

Hip joint: adduction, extention, slight flexion (tendinous insertion is also active in internal rotation)
Stabilizes pelvis in coronal and sagittal plane

Question 8

Origin of obturator externus?

Answer 8

Outer surface of the obturator membrane and its bony boundaries