Abdominals

Question 1

Rectus Abdominis

Answer 1

A: Flex the vertebral column
O: Pubic crest, pubic symphysis
I: Cartilage of fifth, sixth, and seventh ribs and xiphoid process
N: T5-T12 ventral rami

Question 2

External Oblique

Answer 2

A:
Unilaterally: Laterally flex vertebral column to the same side, rotate the vertebral column to the opposite side
Bilaterally: Flex the vertebral column, compress abdominal contents
O: Lower eight ribs
I: Anterior part of the iliac crest, abdominal aponeurosis to linea alba
N: T5-T12 ventral rami

Question 3

Internal Oblique

Answer 3

A:
Unilaterally: Laterally flex vertebral column to the same side, rotate vertebral column to the same side
Bilaterally: Flex the vertebral column, compress abdominal contents.
O: Lateral inguinal ligament, iliac crest and thoraolumbar fascia
I: Internal surface of lower three ribs, abdominal aponeurosis to linea alba
N: T7-T12, L1, iliohypogastric, ilioinguinal

Question 4

Transverse Abdominis

Answer 4

A: Compress abdominal contents
O: Lateral inguinal ligament, iliac crest, thoracolumbar fascia and internal surface of lower six ribs
I: Abdominal aponeurosis to linea alba
N: T7-T12, L1, iliohypogastric, ilioinguinal