Anterior Abdominal Wall Flashcards
What are aponeuroses
Flat tendons
What vertebrae contribute to the posterior wall of the abdominal cavity
Five lumbar vertebrae
What are the functions of the abdominal wall
Protect abdominal viscera
Increase intra-abdominal pressure
Maintain posture and move the trunk
Where would you find the costal margin
The costal margin is a cartilaginous arch formed by the medial margins of the cartilages of ribs 7-10
Where would you find the xiphisternum
Bottom tip of the sternum
Name the 9 margins
From L R
From upper to lower
R. hypochondriac region
Epigastric region
L. hypochondriac region
R. Lumbar region
Umbilical region
L. Lumbar region
R. Iliac region
Hypogastric region
L. iliac region
What are the four imaginary lines dividing the abdomen
Midclavicular line
Subcostal line (R and L)
Intertubercular line
Define the transpyloric plane
Horizontal line passes the tips of the R and L 9th costal cartilages
Transects the pylorus of the stomach, the gallbladder, the pancreas and the hila of the kidneys
Define the transumbilical plane
Unreliable marker
Depends on the amount of fat present
Lies approx. level L3
Define intercristal plane
Line between highest points of L and R iliac crests
Used to guide procedures e.g. lumbar puncture
Define McBurney’s Point
Lies 2/3 of the way along a line drawn from the umbilicus to the R anterior superior iliac spine
Marks base of the appendix
Name the 4 pairs of muscles compromising of the anterolateral abdominal wall
External oblique
Internal oblique
Transversus abdominis
Rectus abdominis
Where is the rectus abdominis found and connected
Either side of the midline
Attached to the sternum and costal margins superiorly
Pubis inferiorly
Surrounded by aponeurotic sheath
What is the tough midline raphe called of fused aponeuroses
Linea alba
Another word for raphe
Seam
