Abdomen#Human abdomen

As the abdominal muscles twisted -scale skeletal muscles are called that surround the abdominal and pelvic cavity and connect the rib cage to the pelvis. These muscles allow the inclining and turning of the trunk and adaptation to changes in the stomach volume, for example in the growth of a pregnancy. The simultaneous contraction of all the abdominal muscles increases pressure in the abdomen and strengthened so as abdominal press either the exhalation or excretion of feces and urine. The abdominal muscles are divided into three groups whose designation is not uniform.

System

The abdominal muscles are divided into three groups according to their location:

Anterior abdominal wall muscles:

Lateral abdominal wall muscles:

Posterior abdominal wall muscles:

The naming of the groups may also be different: the posterior abdominal wall muscles are then called deep abdominal muscles, the lateral and anterior muscles are referred to as lateral and medial muscles of the superficial abdominal muscles.

Function

In this form the lateral abdominal muscles and their aponeuroses - ie areal tendons - the so-called rectus sheath, in which just coming to lie abdominal muscle.

The front is the rectus abdominis, it can bend the torso forward or lift the front edge of the pool. He is the direct opponent of the spinal muscles and counteracts the hollow back. He is similar to the front thigh muscles, the glutes and the back muscles to the muscles that are particularly important for the upright-walking human. A well-trained abdominal muscles facilitates good posture helps to counteract the hollow cross and the "duck butt ".

The two obliques can the upper body to the side tilt and turn. The transverse abdominal muscle can generate an abdominal pressure, such as during a bowel movement. In addition, the abdominal muscles accessory muscles during exhalation.

Natural openings

In the muscles of the abdominal wall, there are two natural openings:

• Inguinal canal
• Navel