Abdominal Wall

Question 1

Origin of external oblique

Answer 1

external surfaces of ribs 5 - 12

Question 2

insertion of external oblique

Answer 2

anterior part of the iliac crest, abdominal aponeurosis to linea alba

Question 3

action of external obliques

Answer 3

unilaterally - laterally flex the vertebral column to the same side, rotate vertebral column to the opposite side

bilaterally - flex the vertebral column, compress the abdominal contents

Question 4

innervation of external obliques

Answer 4

T5 - T12

Question 5

origin of internal oblique

Answer 5

lateral inguinal ligament, iliac crest and thoracolumbar fascia

Question 6

insertion of internal oblique

Answer 6

internal surface of lower 3 ribs, abdominal aponeurosis to linea alba

Question 7

action of internal oblique

Answer 7

unilaterally - laterally flex vertebral column to the same side, rotate vertebral column to the same shit

bilaterally - flex the vertebral column, compress the abdominal contents

Question 8

innervation of internal oblique

Answer 8

T7 - L1

Question 9

origin of transverse abdominus

Answer 9

lateral inguinal ligament, iliac crest, thoracolumbar fascia and internal surface of lower 6 ribs

Question 10

insertion of transverse abdominus

Answer 10

abdominal aponeurosis to linea alba

Question 11

action of transverse abdominus

Answer 11

compress abdominal contents

Question 12

innervation transverse abdominus

Answer 12

T7 - L1

Question 13

origin rectus abdominis

Answer 13

pubic crest, pubic symphysis

Question 14

insertion of rectus abdominis

Answer 14

cartilage of 5th, 6th and 7th ribs and xiphoid process

Question 15

action rectus abdominis

Answer 15

flex the vertebral column

tilt pelvis posteriorly

Question 16

innervation of rectus abdominis

Answer 16

T5 - T12

Question 17

origin of psoas major

Answer 17

bodies and TP of lumbar vertebrae

Question 18

insertion of psoas major

Answer 18

lesser trochanter

Question 19

action of psoas major

Answer 19

with the origin fixed - flex the hip, may laterally rotate the hip

with insertion fixed - flex the trunk toward the thigh, tilt pelvis anteriorly

unilterally - assist to laterally flex the lumbar spine

Question 20

innervation of psoas major

Answer 20

L1 - L4

Question 21

origin of iliacus

Answer 21

iliac fossa

Question 22

insertion of iliacus

Answer 22

lesser trochanter

Question 23

action of iliacus

Answer 23

with the origin fixed - flex the hip, may laterally rotate the hip

with the insertion fixed - flex the trunk toward the thigh, tilt pelvis anteriorly

Question 24

innervation of iliacus

Answer 24

femoral nerve L1 - L4

Question 25

origin of quadratus lumborum

Answer 25

posterior iliac crest

Question 26

insertion of quadratus lumborum

Answer 26

last rib and TP of 1st through 4th lumbar vertebrae

Question 27

action of quadratus lumborum

Answer 27

unilaterally - laterally tilt the pelvis, laterally flex the vertebral column to the same side, assist to extend the vertebral column

bilaterally - fix the last rib during forced inhalation and exhalation

Question 28

innervation of quadratus lumborum

Answer 28

T12 - L3