Abdominal Wall Anatomy Flashcards
The abdominal cavity is bounded superiorly by the
Diaphragm
the inferior boundary of the anterior wall is marked by ____ and ______
inguinal ligament and pubis
_____ marks the boundary of the anterior wall (not the cavity)
costal margin
inguinal ligament is attached medially to _____ and laterally to _______
pubic tubercle and anterior iliac spine (ASIS)
umbilicus marks the position of ____ dermatome
T10
the inguinal ligament marks the position of the ____ dermatome
L1
1 2 3
4 5 6
7 8 9
Which position is 1?
Right hypochondrium
Liver, R kidney, Gallbladder, Small intestine, Ascending/Transverse colon
1 2 3
4 5 6
7 8 9
Which position is 2?
Epigastric Region
Esophagus, Liver, Pancreas, R/L adrenal glands, R/L kidneys, spleen, stomach, T colon
1 2 3
4 5 6
7 8 9
Which position is 3?
Left hypochondrium
Descending colon, L kidney, liver, pancreas, SI, spleen, stomach, T colon
1 2 3
4 5 6
7 8 9
Which position is 4?
Right Flank/Lumbar
A colon, gallbladder, Liver, R kidney, SI
1 2 3
4 5 6
7 8 9
Which position is 5?
Umbilical Region
Cisterna chyli, Pancreas, R/L kidneys, R/L ureters, SI, stomach, T colon
1 2 3
4 5 6
7 8 9
Which position is 6?
Left Flank/Lumbar
D colon, L kidney, SI
1 2 3
4 5 6
7 8 9
Which position is 7?
Right Groin/Inguinal
Appendix! Cecum, a colon, R fallopian tube, R ovary, SI
1 2 3
4 5 6
7 8 9
Which position is 8?
Pubic/Hypogastric
Prostate, Rectum, R/L fallopian, R/L ovaries, R/L ureters, Seminal vessicle, Sigmoid colon, SI, bladder, uterus, Vas deferens
1 2 3
4 5 6
7 8 9
Which position is 9?
Left Groin/Inguinal
L fallopian, left ovary, SI, descending colon, sigmoid colon
anterolateral abdominal wall has 3 muscle layers:
external oblique, internal oblique, transverse abdominis
____ muscle extends from sternum to pubic crest on each side of midline
rectus abdominis
Layers of anterolateral abdominal wall
Skin Superficial Fascia Wall muscles (Rectus abdominis, external oblique, internal oblique, transverse abdominis) Transversalis Fascia Extraperitoneal Fat Parietal Peritoneum
Lymphatic drainage in relation to transumbilical line
Above: axillary nodes
Below: superficial inguinal nodes
venous drainage in relation to transumbilical line
above: to axillary vein
below: femoral veins
* *thoracoepigastric vein is anastomoses between the two**
Rectus Abdominis
Attachment: sternum/rib to pubis
Innervation: thoracolumbar nerves from L1
Segmented by tendinous intersections
Linea Alba
intersecting tendinous fibers of 3 abdominal layers - avascular, surgical opening site, inferiorly forms inguinal ligament
Rectus Sheet anterior layer - upper wall
1/2 external oblique, 1/2 internal oblique
