Rectus Sheath

Question 1

The rectus sheath is formed above and below what?

Answer 1

Arcuate line

Question 2

Above the arcuate line the anterior layer consists of?

Answer 2

External oblique aponeurosis

Anterior layer of the internal oblique aponeurosis

Question 3

Above the arcuate line the posterior layer consists of?

Answer 3

Posterior layer of internal oblique aponeurosis

Aponeurosis of transversus abdominis

Question 4

Below the arcuate line the anterior layer consists of?

Answer 4

Aponeurosis of the external oblique

Internal oblique, and transversus abdominis

Question 5

Below the arcuate line the posterior layer consists of?

Answer 5

Deficient, covered only by the transversalis fascia

Question 6

The arcuate line is located posterior to what muscle?

Answer 6

Rectus abdominis

Question 7

The arcuate line is midway between what two things?

Answer 7

umbilicus and symphysis

Question 8

What are the contents of the rectus sheath?

Answer 8

Rectus abdominis
pyramidalis
Superior and inferior epigastric arteries and veins (that lie below Rectus Abdominis muscle)

Question 9

The pyramidalis muscle is absent in what percentage of people?

Answer 9

15%