Abdominal wall

Question 1

Name the two parts of the external abdominal oblique

Answer 1

pars costalis and pars lumbis

Question 2

Name the origins and insertions of the external abdominal oblique musclen

Answer 2

PC Origin- lateral aspect of ribcage (4-12)
PC Insertion- via abdominal tendon onto linea alba

PL Origin-last rib + lumbar fascia
PL Insertion- pelivic tendon onto pubic brim and iliopsoas fascia

Question 3

What is the origin and insertio of the internal abdominal oblique

Answer 3

Origin: tuber coxae, inguinal ligament, lumber fascia
Insertion: last few ribs, linea alba

Question 4

What are the actions of the oblique muscles?

Answer 4

• along with other abdominal muscles they compress the abdominal viscera as in defecation etc.
• suspend and support abdominal viscera
• lateral bending of the spine