Muscle Anatomy Stomach

The muscle layer alone has three different sub layers. The abdominal muscles form the anterior and lateral abdominal wall and consist of the external abdominal obliques the internal abdominal obliques the rectus abdominis and the transversus abdominis.

Stomach Anatomy

It enables the tilt of the pelvis and the curvature of the lower spine.

Muscle anatomy stomach. The stomach secretes acid and enzymes that digest food. The muscle fibers merge at the midline surround the rectus abdominus and join on the other side at a point known as the linea alba. The muscles move the contents of the stomach around so vigorously that solid parts of the food are crushed and ground and mixed into a smooth food pulp.

This wide muscle helps to rotate the spine increases pressure within the abdomen needed for certain functions such as defecating and assists with breathing movements. Next to it on both sides of the body is the internal oblique. Working as a team these muscles contract to flex laterally bend and rotate the torso.

The abdominal muscles consist of three distinct layers residing within the abdominal wall and extend to the pubis iliac crest lower ribs and vertebral column. The inner mucous membrane lining has large folds that are visible to the naked eye. The stomach muscles contract periodically churning food to enhance digestion.

Acting together these muscles form a firm wall that protects the viscera and they help to maintain erect posture. Ridges of muscle tissue called rugae line the stomach. Anatomy of the stomach steve gschmeissnersplgetty images the wall of the stomach is structurally similar to other parts of the digestive tube with the exception that the stomach has an extra oblique layer of smooth muscle inside the circular layer which aids in the performance of complex grinding motions.

Extending across the anterior surface of the body from the superior border of the pelvis to the inferior border of the ribcage are the muscles of the abdominal wall including the transverse and rectus abdominis and the internal and external obliques.

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