Ant. Abdominal Wall: Muscles

Question 1

What is the median tendonus raphe which extends from the xiphoid process to the pubic symphyis

Answer 1

Linea Alba

Question 2

The fibers of the external oblique run in which direction?

Answer 2

Downward and Forward

Question 3

The fibers of the internal oblique run in which direction?

Answer 3

Downward and Backward

Question 4

What is the muscle that is known to be the “natural back brace” of the body?

Answer 4

Transversus Abdominus Muscle

Question 5

The linea alba runs between what muscle fibers?

Answer 5

Vertically between the fibers of the left and right rectus abdominis muscles

Question 6

What is the curved line along the lateral border of the rectus abdominis muscle?

Answer 6

Linea Semilunaris

Question 7

What are the 3 bundles of connective tissue that run transversely across the rectus abdominis muscle and are fused with the rectus sheath?

Answer 7

Tendinous Intersections

Question 8

Which muscle of the anterior abdominal wall is often absent but lies anterior to the rectus abdominis within the rectus sheath?

Answer 8

Pyramidalis Muscle

Question 9

How do the anterior abdominal muscles relate to low back pain?

Answer 9

Weak abdmonial muscles are well documented to be a cause of low back pain

Question 10

The anterior abdmoninal wall muscles are involved in what visceral functions?

Answer 10

1) Coughing (Forced Exasperation from the Vagus)
2) Sneezing (Forced Exasperation from the Trigeminal)
3) Deification
4) Vomiting
5) Maturation (Urination)
6) Parturition (Child Birth