abdominal wall muscles

Question 1

abdominal wall muscle groups

Answer 1

anterior group
lateral group
posterior group

Question 2

anterior group

Answer 2

• rectus abdominis
• pyramidalis

Question 3

lateral group

Answer 3

• external oblique of the abdomen
• interal oblique of the abdomen
• transversus abdominis

Question 4

posterior group

Answer 4

• quadratus lumborum

Question 5

name, origin, insertion, action, layer

Answer 5

rectus abdominis
o: ribs 5-7
a: expiration
anterior group

Question 6

name, origin, insertion, action, layer

Answer 6

pyramidalis
o: pubic crest
i: linea alba
a: tenses linea alba
anterior group

Question 7

name, origin, insertion, action, layer

Answer 7

external oblique of the abdomen
o: rib 5-12
i: linea alba
a: trunk movement
lateral group

Question 8

name, origin, insertion, action, layer

Answer 8

internal oblique of abdomen
o: iliac crest
i: ribs 10-12
a: trunk movement
lateral group

Question 9

name, origin, insertion, action, layer

Answer 9

transversus abdominis
o: ribs 7-12
i: pubic crest
a: trunk compression, expiration
lateral group

Question 10

name, origin, insertion, layer

Answer 10

quadratus lumborum
o: iliac crest
i: L1-L4
posterior group