text: A lower transverse line midway between the upper transverse and the upper border of the symphysis pubis; this is termed the<unk>  (or transtubercular), since it practically corresponds to that passing through the iliac tubercles; behind, its plane cuts the body of the fifth lumbar vertebra.
option_0: Intertubercular plane
option_1: Subcostal plane
option_2: Costomediastinal recess
option_3: Sternocostal surface
option_4: Mediastinal pleura
option_5: Sternal plane
option_6: Danger space
option_7: Hilum