Muscles of the Abdominal Wall (O/I/A) Flashcards
1
Q
Rectus abdominis
A
O: Pubic crest and symphysis
I: Xiphoid process and costal cartilages of ribs 5-7
A: Flex/rotate lumbar region of vertebral column
2
Q
External oblique
A
O: Outer surface of lower 8 ribs
I: Linea alba
A: Flex vertebral column, compress abdominal wall
3
Q
Internal oblique
A
O: Lumbar fascia, iliac crest
I: Linea alba, pubic crest, last 3/4 ribs
A: Flex vertebral column, compress abdominal wall
4
Q
Transversus abdominis
A
O: Inguinal ligament, cartilage of last 6 ribs, iliac crest
I: Linea alba, pubic crest
A: Compresses abdominal contents
