Body Wall and Cavity
Abdominal Surface and underyling bones
Muscular Wall and Hernias
Peritoneum and Mesenteries
Thorax Surface
Ribs and Intercostal Muscles
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
Abdominal muscular wall
pressurizes abdomen
When?






Cough
Sneeze
Urinate
Defecate
Birth
Lifting
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
THORAX SURFACE ANATOMY
Student who cheated in anatomy lab:
counted own ribs
Males and Females have same number
of ribs (no, Eve wasn’t formed from one of
Adam’s)
BONES
STERNUM


manubrium
xiphoid process
RIBS
INTERCOSTAL MUSCLES
“COSTAL” = ribs
“intercostal” =
between the
ribs
Function in posture, respiration