Muscles of Anterior Abdominal Wall

Question 1

Rectus abdominus O?

Answer 1

Pubic crest, pubic symphysis

Question 2

Rectus abdominus I?

Answer 2

Cartilage of ribs 5-7 and xiphoid process.

Question 3

Rectus abdominus A?

Answer 3

Flex the vertebral column.

Question 4

Rectus abdominus OI reversed?

Answer 4

Flex the vertebral column.

Question 5

External oblique: how to remember muscle direction?

Answer 5

Put hands in your pockets.

Question 6

External oblique O?

Answer 6

Lower ribs 5-12.

Question 7

External oblique I?

Answer 7

Ant. pt. of iliac crest and linea alba (white line splitting rectus abdominus in half lengthwise)

Question 8

External oblique A?

Answer 8

Bilaterally flex vertebral column. Unilaterally laterally flex and rotate trunk.

Question 9

Internal oblique: how to remember muscle direction?

Answer 9

Put hands in opposite pockets.

Question 10

Internal oblique O?

Answer 10

Lateral inguinal ligament, iliac crest and thoracolumbar fascia.

Question 11

Internal oblique I?

Answer 11

Ribs 10-12 and linea alba.

Question 12

Internal oblique A?

Answer 12

Bilat: flex and compress abdomen. Unilat: flex and rotate to same side.

Question 13

Transverse abdominus O?

Answer 13

Lateral inguinal ligament, iliac crest, thoracolumbar fascia and lower 6 ribs.

Question 14

Transverse abdominus I?

Answer 14

Abdominal aponeurosis to linea alba.

Question 15

Transverse abdominus A?

Answer 15

Compress abdominal contents.