Ilium

Question 1

The upper curved ridge of the ilium; important for muscle attachment and forms waistline

Answer 1

Iliac Crest

Question 2

Rough, ear-shaped area on the ilium that articulates with the sacrum to form the sacroiliac joint.

Answer 2

Auricular Surface

Question 3

A deep indentation that allows passage of the sciatic nerve from the pelvis to the lower limb

Answer 3

Greater Sciatic Notch

Question 4

A bony prominence at the front of the ilium; attachment site for muscles and ligaments (e.g., inguinal ligament).

Answer 4

Anterior Superior Iliac Spine (ASIS)

Question 5

Located below ASIS; serves as an attachment point for the rectus femoris muscle (important for hip flexion)

Answer 5

Anterior Inferior Iliac Spine (AIIS)

Question 6

A bony landmark at the back of the ilium; visible as dimples on the lower back.

Answer 6

Posterior Superior Iliac Spine (PSIS)

Question 7

Located below the PSIS; serves as an attachment site for ligaments

Answer 7

Posterior Inferior Iliac Spine (PIIS)

Question 8

A large, shallow depression on the inner surface of the ilium; provides attachment for the iliacus muscle (important for hip flexion).

Answer 8

Iliac Fossa

Question 9

The articulation between the auricular surface of the ilium and the sacrum; helps transfer weight from the spine to the lower limbs.

Answer 9

Sacroiliac Joint