Muscles and Aponeurosis of abdominal region

Question 1

Anterior group of abdominal muscles

Answer 1

rectus abdominis and sometimes pyramidalis

Question 2

Anterolateral muscle groups

Answer 2

external abdominal oblique
internal abdominal oblique
transversus abdominis

Question 3

Posterior muscle groups

Answer 3

iliacus
posoas major and minor
quadratus lumborum

Question 4

Flexion of abdominal region

Answer 4

EO, IO, RA

Question 5

ABduction of trunk

Answer 5

lateral flexion of trunk

contraction of EO and IO together on one side

Question 6

Rotation of trunk

Answer 6

EO on one side and IO on the other: fibers of opposite sides from the two layers run in the same direction

R EO is parallel with L IO

Question 7

In what region do fibers of the EO and IO run parallel?

Answer 7

inguinal and hypogastric region the run parallel to EO aponeurosis

Question 8

abdominal wall muscles assist in

Answer 8

respiration: forced expiration by compressing abdominal content, forcing viscera against diaphragm

VALSALVA maneuver, fixation of abdominal wall by rasing thoracoabdominal pressure (Valsalva maneuver)

coughing, sneezing, urination, defection, emesis, parturition

Question 9

Above the arcuate line: layers

Answer 9

skin
Fatty and membranous superficial layes 
Aponeurosis of EO (2 layers) 
Aponeurosis of IO (1 layer) 
rectus abdominis muscle 
Apo of IO (1 layer)
Apo of TA (2 layers) 
transversalis fascia 
Extraperitoenal tissue 
Parietal peritoneum

Question 10

Below the arcuate line: layers

Answer 10

Skin
fatty layer of superficial fascia
membraneous layer of superficial fascia
Apo of EO (2 lay)
Apo of IO (2 lay) 
Apo of TA (2 lay) 
transervsalis fascia
extraperitoneal fascia 
parietal fascia