Anterior Abdominal Wall Flashcards
Surface landmarks
Linea alba
Linea semilunaris
Tendinous intersections
Inguinal ligament
Right upper quadrant
Right love
Gallbladder
Upper colon
Left upper quadrant
Spleen
Stomach
Pancreas
Left kidney
Right lower quadrant
Appendix
Right uterine tube
Left lower quadrant
Sigmoid and descending colon
Left uterine tube
Planes
Transumblical L3/L4
Subcostal
Transtubercular L5
Transpyloric L1
Supracristal L4
Interspinous S1
Subdivision of abdomen
(9)
Right and left hypochondriac
Right and left lumbar
Right and left iliac
Epigastrium
Umbilical
Hypogastrium
Layers of anterior abdominal wall
Skin
Superficial fascia
Muscles/aponeurosis/investing fascia
Transversalis fascia
Extraperitoneal fascia fascia
Parietal peritoneum
Langer’s Lines
Tension lines are important for incisions and decreasing scarring
Gridiron incision
Split muscles without cutting them
Ex. McBurney incision at McBurney point
McBurney point
Maximum tenderness site in appendicitis
1/3 from ASIS to umbilicus (2/3 from umbilicus to ASIS)
Iliohypogastric n
Superficial fascia
Above umbilicus - Camper’s fascia
Below umbilicus - Camper’s and Scarpa’s fascia
Abdominal muscles
Support and protect, posture, stabilization
EO, IO, TA, RA, P
External oblique
Hands in pocket
Aponeurosis forms anterior wall of rectus sheath, inguinal ligament
Internal oblique
Hands to chest
Perpendicular to EO