Anterior Abdominal Wall Flashcards
RUQ contents
- Right lobe of liver
- Gallbladder
- Pylorus of stomach
- Duodenum (1-3)
- Head of pancreas
- Suprarenal gland
- Kidney
- R colic flexure
- superior ascending colon
- right half transverse colon
LUQ contents
- Left lobe of liver
- Spleen
- Stomach
- jejunum
- proximal ileum
- body and tail of pancreas
- kidney
- suprarenal gland
- left colic flexure
- left half transverse colon
- superior descending colon
RLQ contents
- cecum
- appendix
- majority of ileum
- inferior ascending colon
- ovary
- uterine tube
- abdominal part of R ureter
- abdominal part of R spermatic cord
- uterus and bladder if full/enlarged
LLQ contents
-sigmoid colon
-inferior descending colon
-L ovary
-L uterine tube
-abdominal part of L ureter
abdominal part of L spermatic cord
-uterus and bladder if full/enlarlged
What plane is at the level of the transverse colon?
Subcostal plane
What plane passes inferior border of 10th costal cartilage?
Subcostal plane
What plane is at the level of the ileocecal junction?
Transtubercle plane
What plane is between iliac tubercles?
Transtubercle plane
What plane is between ASIS?
Interspinous plane
What plane is at the level of the appendix and sigmoid colon?
Interspinous plane
What plane is at the level of L1?
Transpyloric plane
What plane is at the level of L3?
Subcostal
What plane is at the level of L5?
Transtubercular
What plane is at the level of S2?
Interspinous
What plane is at the level of the gallbladder fundus, pylorus of stomach, pancreatic neck, SMA and root of transverse mesocolon?
Transpyloric plane
What separates the abdomen from the pelvis?
imaginary pelvic inlet
Boundaries of Anterolateral Abdominal Wall
upper 7-10 costal cartilages—> lower inguinal ligament and pelvic bones
Layers of Abdominal Wall
Skin–> Camper’s fascia (fatty)–> Scarpa’s fascia (membranous)–> aponeurosis
How can fluid flow from abdomen to superficial perineum?
Scarpa’s fascia is continuous with Colle’s fascia of perineum
Why can’t fluid go from abdomen into leg?
Scarpa’s fascia is fused with fascia lata
O/I of External Oblique M
Outer surface of lower 6 ribs–> aponeurosis, linea alba, ant iliac creast and pubic tubercle
What innervates External Oblique M
Ventral rami of T7-12
——-> Thoracoabdominal N and Subcostal N
What is the fxn of eternal oblique muscle?
increase intra-abd pressure, move trunk, retain posture
Innervation of Internal Oblique M
T7-12, L1
—>Thoracoabd N, Subcostal N, Ilioinguinal N, Iliohypogastric N
O/I Internal Oblique M
iliac crest–> lower 10-12 ribs, aponeurosis, linea alba, pubic crest
What does the lower portion of internal oblique M make?
conjoint tendon/ injuinal falx
What does the internal oblique muscle form?
Part of aponeurosis
Cremasteric muscle
What is the fxn of conjoint tendon?
prevents weak spot in abd wall—> if not working———-> DIRECT HERNIA
Innervation of Transversus Abdominis M
T7-11
O/I of Transversus Abdominis M
lower 7-12 ribs, iliac crest, some inguinal L—> linea alba, pectin pubis, pubic crest