Abdominal Wall and Cavity Surface Anatomy Muscular Wall and Hernias Peritoneum and Mesenteries

Bony Landmarks around Abdomen Iliac crest Anterior superior iliac spine (ASIS) Pubic crest Inguinal ligament Costal margin Xiphoid process

Abdominal Wall from surface Rectus abdominus Linea alba Iliac crest

Muscles of abdominal wall Rectus abdominus--vertical midline Three layers form tube External oblique (“hands-in-pocket”) Internal oblique (fibers perpendicular to external) Transverse abdominus (wraps around)

Muscles of abdominal wall--details Please see Fig. 11.11, M&M for accurate labeling.

Muscles of Posterior Abdominal Wall

What is inguinal canal? Attachment where scrotum “pooches out”--carries all 3 layers of abdominal wall through successive holes spermatic cord to testicles NAV Vas Deferens

Abdominal muscular wall pressurizes abdomen When? Cough Sneeze Urinate Defecate Birth Lifting For article on abdominal muscles, role of different layers and use of lifting belts: http://www.paulchekseminars.com/articles.cfm?select=16#top

Inguinal hernia results because pressure finds weak spot at inguinal canal

Mesenteries, peritoneum--what is retroperitoneal? (back to basic body plan) [board drawing]

Peritoneal vs Retroperitoneal Laproscopic kidney donation with retroperitoneal access

How will you see anatomy in the future—in your jobs? Radiological Review of Abdominal Structures—abdominal wall, abdominal organs.