Abdominal wall

Question 1

What is the inguinal canal formed from?

Answer 1

Aponeurosis of the external oblique muscle

Question 2

Which muscles make up the anterior abdominal wall?

Answer 2

rectus abdominis (rectus sheath)
external oblique (medial downward)
Internal oblique (medial upward)
TRansverse abdominus (horizontally)

Question 3

What are the most superficial layers of the abdominal wall?

Answer 3

skin > campers fascia > scarpa’s fascia (membranous superficial fascia)

Question 4

Contents of the inguinal canal in females

Answer 4

Round ligament + ilioinguinal nerve

Question 5

Contents of the inguinal canal in males

Answer 5

spermatic cord + ilioinguinal nerve

Question 6

What is the rectus sheath made up of?

Answer 6

Aponeurosis of the external/internal oblique and transverse abdominus

Question 7

What is the significance of the Arcuate line

Answer 7

Where the rectus sheath ends, site where inferior epigastric vessels perforate rectus abdominus, rectus abdominus msucles are no longer contained within the internal oblique muscles inferior to the arcuate line, the aponeurosis of the internal oblique and traverse abdominus muscles move anterior to the rectus abdominus

Question 8

Position of the arcuate line

Answer 8

1/3 distance from umbilicus to pubic crest