Abdominal Muscles Flashcards Preview

Lower Extremity > Abdominal Muscles > Flashcards

Flashcards in Abdominal Muscles Deck (14):
1

External Oblique origin and insertion

Origin- External surfaces of ribs 5-12

Insertion- Anterior part of iliac crest, abdominal aponeurosis to linea alba

2

External Oblique Action

Unilaterally: Laterally flex vertebral column to the same side; Rotate vertebral column to the opposite side

Bilaterally: Flex the vertebral column
Compress Abdominal contents

3

Internal oblique origin and insertion

Origin- Lateral inguinal ligament, iliac crest and thoracolumbar fascia

Insertion- Internal surface of lower three ribs, abdominal aponeurosis to linea alba

4

Internal oblique Action

Unilaterally: Laterally flex vertebral column to the same side; Rotate vertebral column to the same side

Bilaterally: Flex the vertebral column
Compress abdominal contents

5

Transverse Abdominis origin and insertion

Origin- Lateral inguinal ligament, iliac crest, thoracolumbar fascia and internal surface of lower six ribs

Insertion- Abdominal aponeurosis to linea alba

6

Transverse Abdominis Action

Compress the abdominal contents

7

Rectus Abdominis origin and insertion

Origin- Pubic crest, pubic symphysis

Insertion- Cartilage of fifth, sixth and seventh ribs and xiphoid process

8

Rectus Abdominis Action

Flex the vertebral column
Tilt the pelvis posteriorly

9

Quadratus Lumborum origin and insertion

Origin-Posterior Iliac Crest

Insertion- Last rib and transverse processes of first through fourth lumbar vertebrae

10

Quadratus Lumborum Action

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

11

Psoas Major origin and insertion

Origin- Bodies and transverse processes of lumbar vertebrae

Insertion- Lesser Trochanter

12

Psoas Major Action

With origin fixed: Flex the hip; May laterally rotate the hip

with insertion fixed: Flex the trunk toward the thigh; Tilt the pelvis anteriorly

Unilaterally: Assist to laterally flex the the lumbar spine

13

Iliacus origin and insertion

Origin- Iliac fossa

Insertion- Lesser trochanter

14

Iliacus Action

With origin fixed: Flex the hip; May laterally rotate the hip

With insertion fixed: Flex the trunk toward the thigh; Tilt pelvis anteriorly