1. Abd. Wall & Peritoneal Cavity Flashcards
Name the 4 layers of the abdominal wall, form superficial to deep
Skin, Superficial fascia, deep fascia/epimysium, muscles, fascia transversalis, extraperitoneal fat, peritoneum
Name the two subdivisions withing the superficial fascia and what feature lies between them
Camper’s fatty layer (superficial)
Scarpa’s membranous layer (deep)
Between them: neurovascular bundle
Name the muscles of the anterolateral abdomen
Lateral: external oblique, internal oblique, transversus abdominus
Medial/Anterior: rectus abdominis & pyramidalis
Rectus Abdominus.
Name the origin and insertion point.
Origin: Xiphoid process, cartilages of ribs 5-7
Insertion: Pubic symphysis and crest
Pyramidalis
Name the origin and insertion point.
Origin: Pubis
Insertion: Linea alba
External Oblique
Name the origin and insertion point.
Origin: lower eight ribs; iliac crest
Insertion: linea alba, pubic crest
Internal Oblique
Name the origin and insertion point.
Origin: lumbar fascia, iliac crest, inguinal ligament
Insertion: lower 3 ribs, xiphoid process, linea alba, pubic crest
Transversus Abdominis
Name the origin and insertion point.
Origin: lumbar fascia, iliac crest, inguinal ligament
Insertion: Xiphoid process, linea alba
Capital medusae. Give feature and cause.
Obstruction of the portal vein, periumbilical veins become bigger and visible because they serve as avenue of venous return
Name the superior and inferior boundaries of the abdomen
Superiorly: the costal margin, xiphoid process, and cartilage of ribs 7-10
Inferiorly: iliac crest, pubis
What line ruuns from the xiphoid process to the pubis?
Linea alba (white line)
6 common causes of abdominal protrusion
Food Fat (also food) Fluid Feces Flatus Fucking (Fetus)
Describe the path designated by the arcuate line
Spot halfway between umbilicus and pubic bone makes a line out to the anterior spine (bump of the crest) on either side
Describe the differences between the rectus sheath above and below the arcuate line
Above: Aponeuroses of internal oblique surrounds rectus abdominis muscle, with those of external and transversus
Name the intraperitoneal organs
Liver, spleen, stomach, duodenum (1st part), jejunum, ileum, transverse & sigmoid colon, superior rectum
Name the retroperitoneal organs
Kidneys, adrenal glands, pancreas (head & body), duodenum (parts 2-4), ascending & descending colon
Hangs from the greater curve of the stomach, prevents adhesions between the parietal peritoneum and the ventral body wall
Greater omentum
Runs between the lesser curvature of the stomach and the liver
Lesser omentum
What are two main features of the lesser omentum
Hepatogastric ligament (attaches to liver) Hepatoduodenal ligament (encloses the portal triad)
Explain the difference between the greater sac and the lesser
Lesser: above/behind stumach, all the way into the greater omentum
Greater: everything posterior/inferior to spleen, transverse colon, greater omentum
Membrane that holds all the intestines in place
Mesentary
Name all the ligaments of the liver
Right triangular, left triangular, anterior and posterior coronary ligaments, falciform ligament, round ligament
What ligament divides the right and left lobe of the liver
Falciform ligament
What structure used to be the umbilical vein of the fetus
Round ligament