Muscles - Lower Limb and Hip

Question 1

Adductor Brevis

Answer 1

Origin: Inferior ramus of pubis

Insertion: Pectineal line and medial lip of linea aspera

Action: Adduction and weak flexion of hip

Question 2

Obturator Externus

Answer 2

Origin: Outer surface of obturator membrane, superior and inferior pubic rami

Insertion: Trochanteric fossa of femur

Action: Adduction and external rotation at hip joint

Question 3

Pectineus

Answer 3

Origin: Pecten pubis

Insertion: Pectineal line of femur

Action: Adduction, internal rotation and weak flexion of hip joint, pelvic stability

Question 4

Adductor Longus

Answer 4

Origin: Medial part of superior ramus of pubis

Insertion: Linea aspera

Action: Adduction and flexion of hip, extension and external rotation of the femur

Question 5

Gracilis

Answer 5

Origin: Pubic symphysis and inferior pubic ramus

Insertion: Medial surface of tibia

Action: Adduction of hip joint, flexion and internal rotation of knee