1-Anterior Abdominal Wall

Question 1

Boundaries of the abdomen?

Answer 1

Inferior thoracic aperture to the superior margin of the pelvis

Question 2

Posteriorly, the abdominal cavity is bounded by:?

Answer 2

Lumbar vertebrae, psoas, iliacus and quadratus lumborum Also serratus anterior and latissimus dorsi

Question 3

Layers of the anterolateral abdominal wall?

Answer 3

Skin, camper’s fascia, scarpa’s fascia, muscle

Question 4

What lies deep to the muscles of the anterior abdominal wall?

Answer 4

Transversalis fascia

Question 5

Name the regions of the abdomen

Answer 5

Name

Question 6

Origin of external oblique

Answer 6

posterior surface of ribs 5-12 (lower 8 ribs)

Question 7

Origin and insertion of internal oblique

Answer 7

Thoracolumbar fascia of lower back, anterior 2/3 of iliac crest and lateral 2/3 of inguinal ligament

Inserts into linea alba and inferior borders of ribs 10-12

Question 8

Origin of transversus abdominis

Answer 8

From costal margin, lumbar fascia, anterior 2/3 of iliac crest and lateral third of inguinal ligament

Inserts into linea alba, pubic crest and pectineal line

Question 9

Origin of rectus abdominis

Answer 9

Pubic crest and pubic symphysis to costal cartilages of ribs 5-7 and xiphoid process

Question 10

Arrangement of the rectus sheaths

Answer 10

Above the arcuate line, internal oblique splits to envelope rectus abdominis completely, with external oblique anterior/superficial to it and transversus abdominis deep to it
Below arcuate line - all 3 sheet muscles run superficial to rectus abdominis, so there is no posterior rectus sheath

Question 11

Where is the arcuate line?

Answer 11

Halfway between umbilicus and pubic symphysis