muscles

Question 1

What are the flat muscles of the abdomen? where are they located?

Answer 1

Flat muscles are located on lateral sides of abdomen

external oblique - originates rib 5-12 and inserts into iliac crest and pubic tubercle.

Internal oblique - originates from inguinal ligament, iliac crest and lumbodorsal fascia and insert into ribs 10-12

Trasversus abdominis- Originates from the inguinal ligament, costal cartilages 7-12, the iliac crest and thoracolumbar fascia. Inserts into the conjoint tendon, xiphoid process, linea alba and the pubic crest.

Question 2

What are the main innervations of the flat muscles?

Answer 2

Thoracoabdominal nerves (T7-T11) and subcostal nerve (T12).

Branches of lumbar plexus for transversus and internal oblique

Question 3

What are the two verticle muscles? where are they located?

Answer 3

Located on the mid line of the anterolateral abdominal wall.

Rectus abdominis - “six pack”

Pyramidalis - on the base of the pubis bone

Question 4

innervation of rectus abdominis?

Answer 4

thoracoabdominal nerves

Question 5

innervation of pyramidalis?

Answer 5

subcostal

Question 6

Which muscle of the abdominal wall also provides hip flexion?

Answer 6

Psoas major