Muscle Of Abdomen Anatomy

They also help to provide postural support assist in forceful expiration and increase the intra abdominal pressure in activities such as sneezing coughing lifting urinating defecating and childbirth. Lying exposed between the protective bones of the superiorly located ribs and the inferiorly located pelvic girdle the muscles of this region play a critical role in protecting the delicate vital organs within the abdominal cavity.

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In front of the fascia are the abdominal muscles and skin.

Muscle of abdomen anatomy. Inflammation of the covering of the abdominal structures causing rigidity and severe pain. The abdomen is comprised primarily of the digestive tract and other accessory organs which assist in digestion the urinary system spleen and the abdominal muscles shown below. There are two vertical muscles located in the midline of the anterolateral abdominal wall the rectus abdominis and pyramidalis.

The muscles of the abdomen are made up of the muscles of the anterolateral abdominal wall and the muscles of the posterior abdominal wall. In the front the abdomen is protected by a thin tough layer of tissue called fascia. These muscles work together to protect the internal organs viscera by covering them completely.

The rectus abdominis is the large muscle in the mid section of the abdomen. It arises as fleshy fibres from the deep surface of the lower six costal cartilages the lumbar fascia the anteror two thirds of the iliac crest and the lateral third of the inguinal ligament. It enables the tilt of the pelvis and the curvature of the lower spine.

In the rear of the abdomen are the back muscles and spine. The transversus abdominis muscle is the deepest of the abdominal muscles lying internally to the internal abdominal obliques. The muscles of the abdomen lower back and pelvis are separated from those of the chest by the muscular wall of the diaphragm the critical breathing muscle.

It is a thin sheet of muscle whose fibres run horizontally anteriorly. Still it is a very important muscle which is integral to holding your entire abdominal structure together. It is split into two by the linea alba.

The majority of these organs are encased in a protective membrane termed the peritoneum. The rectus abdominis is long paired muscle found either side of the midline in the abdominal wall. The transverse abdominis is the deepest of your ab muscles located underneath your rectus abdominis and obliques.

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