Answer:
The action of the external oblique muscle is contralateral and ipsilateral .
Explanation:
external oblique muscle
The external oblique muscle is the largest muscle.
The external oblique muscle is one of the muscles presents in the lateral anterior abdomen.
The function of external oblique muscle is as follows -
Pulling the chest down and compresses the abdominal cavity , which in turns increases the intra-abdominal pressure in the valsalva maneuver.
Another function of external oblique muscle are contralateral i.e. rotation and ipsilateral i.e. side bending .
