Rectus Sheath Flashcards Preview

My NBCE - GI Anatomy > Rectus Sheath > Flashcards

Flashcards in Rectus Sheath Deck (9)
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1
Q

The rectus sheath is formed above and below what?

A

Arcuate line

2
Q

Above the arcuate line the anterior layer consists of?

A

External oblique aponeurosis

Anterior layer of the internal oblique aponeurosis

3
Q

Above the arcuate line the posterior layer consists of?

A

Posterior layer of internal oblique aponeurosis

Aponeurosis of transversus abdominis

4
Q

Below the arcuate line the anterior layer consists of?

A

Aponeurosis of the external oblique

Internal oblique, and transversus abdominis

5
Q

Below the arcuate line the posterior layer consists of?

A

Deficient, covered only by the transversalis fascia

6
Q

The arcuate line is located posterior to what muscle?

A

Rectus abdominis

7
Q

The arcuate line is midway between what two things?

A

umbilicus and symphysis

8
Q

What are the contents of the rectus sheath?

A

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

9
Q

The pyramidalis muscle is absent in what percentage of people?

A

15%