Constipation can last from days to months, with interludes of diarrhea or normal bowel function. Stools are often hard and may be described as pellet shaped in at least 25% of bowel movements, or Bristol Stool Form Scale 1-2 (separate hard lumps like nuts that are difficult to pass, or sausage shaped but lumpy).
The external abdominal oblique muscle is the largest and most superficial of the 3 paired, flat abdominal muscles. It arises from the lower 8 ribs and interdigitations of the serratus anterior muscle.
External abdominal oblique muscle. The external abdominal oblique muscle is the largest and most superficial of the 3 paired, flat abdominal muscles. It arises from the lower 8 ribs and interdigitations of the serratus anterior muscle.he abdominal wall is composed of 5 paired muscles: 2 vertical muscles (the rectus abdominis and the pyramidalis) and 3 layered, flat muscles (the external abdominal oblique, the internal abdominal oblique, and the transversus abdominis muscles).