Transverse Section - PelvisYou selected: abdominal wall musclesAt this level little can be seen of the muscles of the anterior abdominal wall, aside from the centrally located rectus abdominus Of the three remaining muscles, the external oblique muscle is the most external of the three. It's muscle fibers run perpendicularly to those of the underlying internal oblique muscle. These two muscles help compress the abodomen when straining, and flex the torso when twisting or bending from side to side. The fibers of the third muscle, the transversus abdominus run horizontally. Sit-ups exercise all three muscles.iliopsoas muscle | colon | rectus abdominus | gluteal muscles | mesentary | pelvis | sacrum | Information Module Name: abd1820 Module Title: Transverse Section - Pelvis Image Info: Tansverse Section through the abdomen/pelvis; Visible Human Project. Created by: Lynn Bry Contact Email:bryl@medicine.wustl.edu Last modified: January 12th, 1997 Created with Annotation 1.0 |