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Anterolateral Abdominal Wall
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Where can pain from acute appendicitis be elicited?
McBurney's Point
Anterolateral abdominal wall muscles
Transversus abdominis
Internal oblique
External oblique
Rectus abdominis
What demarcates the rectus sheath?
Linea semilunaris
(semilunar line)
Linea alba
(midline)
Structure at transpyloric plane (level?)
SMA (L1)
Structure at subcostal plane (level?)
IMA (L3)
Structure at supracristal plane (level?)
Bifurcation of aorta (L4)
Structure at transtubercular plane (level?)
Formation of IVC (L5)
At what level is the transumbilical plane?
L3/4 IV disc
What planes divide the abdomen into quadrants?
Midsagittal plane (midline)
Transumbilical plane (L3/4 IV disc)
What planes divide the abdomen into 9 regions?
Right / Left MCL
Subcostal plane (L3)
Transtubercular plane (L5)
Contents of RUQ (9)
Liver (right lobe)
Gallbladder
Pylorus
Duodenum
Pancrease (head)
R. Kidney / adrenal
Hepatic colic flexure
Ascending colon (superior part)
Transverse colon (right half)
Contents of LUQ (9)
Liver (left lobe)
Spleen
Stomach
Jejunum / proximal ileum
Pancreas (body & tail)
L. Kidney / adrenal
Splenic colic flexure
Transverse colon (left half)
Descending colon (superior part)
Contents of RLQ (7)
Distal ileum (most of ileum)
Cecum
Veriform appendix
Ascending colon (inferior part)
R. Ureter
R. Ovary
R. Uterine tube
Contents of LLQ (5)
Descending colon (inferior part)
Sigmoid colon
L. Ureter
L. Ovary
L. Uterine tube
Layers of anterolateral abdominal wall
Skin
Superficial fascia (2 layers)
External oblique (m/a/f)
Internal oblique (m/a/f)
Transversus abdominis (m/a/f)
Transversalis fascia
Extraperitoneal fascia
Peritoneum (parietal)
What are the 2 layers of the superficial fascia
Camper's fascia (fatty)
Scarpa's fascia (membranous)
What is contained in camper's fascia?
Adipose
Superficial veins
What ligament does scarpa's fascia give rise to?
Fundiform ligament of penis
Veins in anterolateral abdominal wall
Paraumbilical vv.
(drain into portal v.)
Superficial epigastric vv.
(drain into femoral v.)
Anastomoses between portal and systemic venous drainage
What structures are continuous w/ scarpa's fascia?
Tunica dartos (scrotum)
Superficial penile fascia
Extends as colles' fascia (perineum)
Where does scarpa's fascia adhere to?
Fascia lata of thigh (below inguinal ligament)
What forms the inguinal ligament?
Extension of the external oblique aponeurosis
Common insertion of all anterolateral abdominal muscles
Linea alba
Gives rise to internal spermatic fascia
Transversalis fascia
Gives rise to cremaster muscle
Internal oblique m.
Gives rise to superficial spermatic fascia
Fascia of external oblique m.
What muscles form the conjoint tendon (a.k.a. falx inguinalis)?
Internal oblique m.
Transversus abdominis m.
Only ______ forms the posterior wall of the rectus sheath ______ to arcuate line
Transversalis fascia
Inferior
What is the cutaneous innervation to the umbilicus
T10 dermatome
What innervates the region of the inguinal ligament as well as the anterior scrotum? (level?)
Ilioinguinal n. (L1)
Median umbilical fold
Fold of peritoneum covering remnant of urachus
umbilicus -> superior surface of bladder
Medial umbilical fold
(a.k.a. medial umbilical ligaments)
Fold of peritoneum over the obliterated fetal umbilical aa.
Lateral umbilical fold
Fold of peritoneum over the inferior epigastric vessels
Landmark - inferior epigastric vessels
Vessels within posterior rectus sheath
Deep inguinal ring (lateral)
Superficial inguinal ring (medial)
Borders of Hesselbach's Triangle
(Inguinal triangle)
Epigastric vessels (superior / lateral)
Inguinal ligament (inferior / lateral)
Rectus abdominis (medially)
Rectus sheath aponeuroses (above arcuate line)
External oblique m.
*Internal oblique m.
Rectus abdominis m.
*Internal oblique m.
Transversus abdominis m.
Transversalis fascia
Rectus sheath aponeuroses (below arcuate line)
External oblique m.
Internal oblique m.
Transversus abdominis m.
Rectus abdominis m.
Transversalis fascia
Innervation of parietal peritoneum
Same innervation as the body wall
Innervation of visceral peritoneum
Same innervation as the viscera it covers
Author
mnm2186
ID
34363
Card Set
Anterolateral Abdominal Wall
Description
Exam 3
Updated
2010-09-19T22:50:02Z
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