Anterior Abdominal Wall Flashcards
Can you identify the boundaries of the abdominal cavity?
xiphisternal junction, follow along costal cartilages, follow erector spinae muscle down to the iliac crest
Describe and demonstrate the divisions of the abdominal wall into 9 regions.
- 2 lines from midclavicular region
- 1 line from transpyloric/subcostal (superior boundaries)
- 1 line from transtubercular plane (inferior boundaries)
Creates the 9 regions:
Right hypochondriac, epigastric, left hypochondriac, right flank, umbilicus, left flank, right inguinal, pubic, left inguinal
Xiphisternal Plane
projects from rib 7–> T9 vertebrae
Transpyloric Plane
palpate the semilunaris and move up to the costal margin; draw a line when you hit the ribs
*Rib 9–> L1 vertebrae
Subcostal Plane
palpate the boundary of the ribs form the costal margin; rib 10
*you go posteriorly and then this will be the L3 vertebrae
Supracristal Plane
very top of the hips; iliac spine
*L4 Vertebrae
Transtubercular Plane
Widest part of the hips @ L5 spinal level
Interspinous Plane
ASIS (Anterior Superior Iliac Spine) goes around to the S2 junction
Layers of the Anterior Abdominal Wall
Subcutaneous Layer 1:
Skin
Camper’s Fascia
Scarpa’s Fascia
Muscle Layer 2:
External Oblique M.
Internal Oblique M.
Transversus Abdominus M.
Layer 3:
Transversalis Fascia
Extraperitoneal Fat
Parietal Peritoneum
Which layer of the abdomen will turn into the Dartos Fascia?
Scarpas Fascia
What layer is pulled out during Botched Liposuction?
Form adhesions with the membraneous fascia below the Campar’s Fascia @ Scarpa’s Fascia Level
What is the direction and attachment points for the external oblique muscle?
Attachment point is Ribs 7, 8, 9, 10 to the iliac crest & ASIS.
*inferior to medial direction on the striation of the muscles
***Around mid-clavicular line the external oblique will turn into aponeurosis
