Muscles of the Abdomen

Question 1

What are the quadrant names of the abdomen?

Answer 1

right upper quadrant (RUQ)
left upper quadrant (LUQ)
Right lower quadrant (RLQ)
Left lower quadrant (LLQ)

Question 2

List the Anterior muscles of the Abdomen. (4)

Answer 2

Recuts abdominis
external oblique
Internal oblique
Tansverse abdominis

Question 3

List the posterior muscles of the Abdomen (2)

Answer 3

Psoas major

Quadratus Lumborum

Question 4

The rectus abdominis attaches from where to where are what are the avaliable actions?

Answer 4

costal cartilages of ribs 5-7, xiphoid process to pubis symphysis and pubic crest

actions: Flexes vertebral column, stabilizes the pelvis during leg lowering, compresses viscera

Question 5

The External oblique attaches from where to where and what are the avaliable actions?

Answer 5

Ribs 5-12 to linea alba, pubic tubercle, anterior 1/2 of iliac crest

actions
unilat = rotates column to contra side, ipsi lat flex

bilat = trunk flex, stabilizes the pelvis during leg lowering, compress and support viscera

Question 6

What fibre direction does the external oblique travel in ?

Answer 6

Anteriorly and inferomedially

Question 7

The internal oblique attaches from what to what and the avaliable actions are?

Answer 7

anterior 1/2 of iliac crest to linea alba ribs 10-12

actions
unilat = rotates column to ipsi side, ipsi lat flex

bilat = trunk flex, compress and support viscera

Question 8

What is the fibre direction of the internal obliques?

Answer 8

Anteriorly and superomedially

Question 9

The transverse abdominis attaches from where to where and what are the avaliable actions?

Answer 9

Inner iliac crest, lower 6 costal cartilages, thoracolumbar fascia to linea alba

actions
bilat = compress and support viscera

Question 10

what is the fiber direction of the transverse abdominis?

Answer 10

medially

Question 11

which abdominal muscle travels anteriorly and inferomedially?

Answer 11

external oblique

Question 12

Which abdominal muscle travels medially?

Answer 12

transverse abdominis

Question 13

Which abdominal muscle travels anteriorly superomedially?

Answer 13

internal oblique

Question 14

What are the attachments for the quadratus lumborum and what are the avaliable actions?

Answer 14

medial 1/2 of rib 12, TVPs of lumbar vertebrae to iliac crest, iliolumbar ligament

actions
bilat = extends the lumbar spine, fixes rib 12 during forced expiration, stabilizes lumbar spine

unilat = ipsi lat flex or hip hike