4. Anterior Abdominal Wall: Deep Dissection

Question 1

Identify 1 -> 2

Answer 1

1. Superior epigastric vessels
2. Rectus abdominis muscle

Question 2

Identify 3 -> 5

Answer 2

3. Transversus abdominis muscle
4. Posterior layer of rectus sheath
5. Inferior epigastric vessels

Question 3

Identify 1 -> 2

Answer 3

1. Superior epigastric vessels
2. Rectus abdominis muscle

Question 4

Identify 6 -> 9

Answer 4

6. Inguinal ligament (Poupart’s ligament)
7. Inguinal falx (conjoint tendon)
8. Cremasteric muscle (middle spermatic fascia)
9. Lacunar ligament (Gimbernat’s ligament)

Question 5

Identify 10 -> 12

Answer 5

10. Medial umbilical ligament (occluded part of umbilical artery)
11. Arcuate line
12. Transversalis fascia

Question 6

Identify 13 -> 14

Answer 6

13. Anterior layer of rectus sheath
14. Linea alba

Question 7

Above the arcuate line…

1. the anterior layer of the rectus sheath comprises the fused aponeuroses of (1)___ ( 2 muscles)
2. the posterior layer comprises the fused aponeuroses of ___ (2 muscles)

Answer 7

1. the external and internal oblique muscles
2. the internal oblique and transversus abdominis muscles

Question 8

Below the arcuate line, the aponeuroses of all 3 muscles fuse to form the anterior layer of the sheath;

→ the rectus abdominis muscle rests only on the ____

Answer 8

transversalis fascia.

Question 9

Below the arcuate line, the aponeuroses of all 3 muscles fuse to form the anterior layer of the sheath

→ the ___ rests only on the thin transversalis fascia.

Answer 9

rectus abdominis muscle

Question 10

The inferior epigastric vessels form the (1)____ and anastomose with the (2)____, which are continuous with the internal thoracic (mammary) vessels.

→ This arterial vascular anastomosis is important in providing blood to the (3)___, because these arteries have connections all along their route with (4)___ and (5)____

Answer 10

1. lateral umbilical fold
2. superior epigastric vessels
3. abdominal wall
4. intercostal arteries (in the thorax)
5. segmental lumbar branches in the abdomen.