Chapter 5 (The Anterolateral Abdominal Wall)

Question 1

(Anterolateral Abdominal Wall)

Subdivided into what 4 walls?

Answer 1

Anterior wall, right and left lateral walls, and posterior walls

Question 2

(Anterolateral Abdominal Wall)
Bounded superiorly by the cartilages of the ________ ribs and ______ process of the sternum and inferiority by the inguinal ligament and superior margins of the pelvic girdle.

Answer 2

7th-10th; xiphoid

Question 3

(Anterolateral Abdominal Wall)

The anterolateral abdominal muscles help retain and support the abdominal viscera and play an important part in the …

Answer 3

movements of the trunk

Question 4

(Anterolateral Abdominal Wall)

Trunk control affects one’s ability to…

Answer 4

hold themselves upright when sitting and moving.

Question 5

(External oblique)

Largest and most superficial of the …

Answer 5

3 flat antero lateral muscles

Question 6

(External oblique)

Muscle fibers will run ________

Answer 6

inferomedially

Question 7

(External oblique)
Its flat tendon (external oblique aboneurosis) extends to the ______ and helps form the _________________ for the rectus abdominis muscle

Answer 7

midline; anterior layer of sheath

Question 8

(External oblique)

What forms the inguinal ligament?

Answer 8

Inferior edge of the external oblique aponeurosis between the anterior superior iliac spine (ASIS) and the pubic tubercle

Question 9

(Internal oblique)

_______ of the three flat abdominal muscles.

Answer 9

Intermediate

Question 10

(Internal oblique)

Fibers run ________ (perpendicular to those of the external oblique)

Answer 10

superomedially

Question 11

(Internal oblique)

Its fibers will become aponeuotic medially to help form the _____________ for the rectus abdominis muscle.

Answer 11

Anterior and posterior layers of the sheath

Question 12

(Transverse abdominis)

_______ of the 3 flat abdominal muscles

Answer 12

Innermost

Question 13

(Transverse abdominis)

Fibers will run transversely except the _______ portion, which will run _______ to the fibers of the internal oblique.

Answer 13

inferior; parallel

Question 14

(Transverse abdominis)
Between the transverse abdominis and internal oblique, the ___________ will contain the nerves and arteries that supply the anterolateral abdominal wall.

Answer 14

neurovascular plane of the anterolateral abdominal wall

Question 15

(Rectus abdominis)

Principal of the vertical wall of the __________

Answer 15

anterior abdominal wall

Question 16

(Rectus abdominis)

Fibers extend vertically from the _____ _____ to the _____ _____ _____ and the xiphoid process.

Answer 16

pubic crest; costal cartilages 5-7

Question 17

(Rectus abdominis)

Is enclosed within the fibrous _____ _____ formed by the aponeurosis of the three flat abdominal muscles.

Answer 17

rectus sheath

Question 18

(Rectus abdominis)

The paired rectus muscles are separated by the _____ _____, which transmits small vessels and nerves to the skin.

Answer 18

Linea alba

Question 19

(Rectus abdominis)

Is 3x as wide ______ as ______

Answer 19

superiorly; inferiorly

Question 20

(Rectus sheath)

Above the arcuate line, the _____ _____ _____ split to contribute to both the _____ and ______ layers

Answer 20

internal oblique aponeurosis; anterior and posterior

Question 21

(Rectus sheath)
Below the arcuate line, all three aponeuroses pass anterior to the _____ _____ with the posterior surface in contact with the _____ _____

Answer 21

rectus abdominis; transversalis fascia

Question 22

(Anterolateral abdominal muscles)

Form a ____ _____ _____ for the anterolateral abdominal wall

Answer 22

Strong expandable support

Question 23

(Anterolateral abdominal muscles)

Support the ____ _____ and protect the from most injuries.

Answer 23

abdominal viscera

Question 24

(Anterolateral abdominal muscles)

Compress the abdominal contents to ____ or _____ the ______pressure and oppose the diaphram.

Answer 24

maintain or increase the abdominal

Question 25

(Anterolateral abdominal muscles)

Diaphram is opposed to…

Answer 25

• Facilitate the forceful expulsion of air from the lungs
• Help empty the bladder and rectum
• Aid in childbirth

Question 26

(Anterolateral abdominal muscles)

How is the trunk moved to help maintain posture?

Answer 26

• Contracting bilaterally, they flex the trunk
• Contracting unilaterally, one external oblique and contralateral internal oblique rotate the trunk toward the side of the internal oblique
• Unilateral contraction of external and internal oblique result in ipsilateral trunk flexion