Abdominal Wall and Cavity

• Surface Anatomy• Muscular Wall and Hernias• Peritoneum and Mesenteries

Iliac crest

Anterior superior iliac spine (ASIS)

Pubic crest

Inguinal ligament

Costal margin

Xiphoid process

Bony Landmarks around Abdomen

Abdominal Wall from surface

Rectus abdominus

Linea alba

Iliac crest

Muscles of abdominal wall

Rectus abdominus--vertical midlineThree 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.