Posted by MGF on August 28, 2011 at 00:36:16:
In Reply to: Questions for the Abdominal Wall posted by lae2 on August 26, 2011 at 15:13:22:
Answer to Questions for the Abdominal Wall
True/False - August 23, 2011 (selection limited by earthquake)
1. The paraumbilical veins communicate with lateral thoracic vein and, thus, contribute to a portacaval shunt.
True—unsure of reasoning
2. The superficial epigastric vein has a communicating branch to the lateral thoracic vein known as the thoracoepigastric vein.
True
3. Scarpa's fascia extends are far inferior as the thigh.
True-Scrapa’s fascia extends just below the inguinal ligament where it fuses with the fascia lata of the thigh
4. The thoracoepigastic vein resides deep to Scarpa's fascia but superficial to deep fascia.
False—it is superficial to Scarpa’s fascia
5. The umbilicus A/P projection is to the T10 vertebra and the cutaneous innervation is by the L3 spinal nerve.
False-the A/P projection IS to the T10 vertebra BUT the cutaneous innervation is by the T10 spinal nerve
6. The transversus abdominis muscle contributes to the same fascial plane as the innermost intercostal muscles.
False—the TA muscle is deep the ribs
7. The arcuate line is a feature of the anterior lamina of the rectus sheath that occurs 3/4 of the way inferior along the sheath.
True
8. The aponeurosis of the internal oblique, inferior to the arcuate line, has two lamina that contribute to the anterior and posterior walls of the rectus sheath.
False—inferior to the arcuate line, all three lamina contribute to the anterior wall of the rectus sheath and there is no posterior wall of the rectus sheath
9. The internal oblique takes origin, in part, from the lateral 2/3 of the linea alba.
False—the internal oblique INSERTS on the linea alba, and takes origin, in part from the lateral 2/3 of the internal oblique
10. The transversus abdominis takes origin, in part, from the later 1/3 of the linea alba.
False—the TA INSERTS on the linea alba, and takes origin, in part from the lateral 1/3 of the inguinal ligament
11. The inferior epigastric artery enters the rectus sheath at a location inferior to the arcuate line.
False-the inferior epigastric artery is deep to the rectus abdominis muscles and the posterior rectus is only present above the arcuate line. Therefore, the inferior epigastric vein cannot enter the rectus sheath below the arcuate line
12. Stability of the vertebral column is enhanced by well toned abdominal oblique muscles due to increased intraabdominal pressure.
True—unsure of exact reasoning
13. The transversalis fascia lines the internal surface of the transversus abdominis muscle and is limited by the attachments of transversus abdominis.
False—While the transversalis fascia does line the surface of the transversus abdominis muscle, it lines the entire abdominal cavity and continues into the pelvis.
14. The rectus abdominis, inferior to the arcuate line, rests directly on transversalis fascia.
True
15. The superficial epigastric artery is a branch of the femoral artery.
False—it is a branch of the internal thoracic artery