How are the abdominal muscles?

When we say that we want to pump up the press, we mean the rectus abdominis muscle. In fact, our press consists of four different muscles: transverse, internal and external oblique, and the actual straight. The transverse abdominal muscle lies inside, under the straight line. Her role is to support the internal organs. It is invisible from the outside, because completely covered with rectus muscle lining the front surface of the abdominal cavity.
The internal oblique abdominal muscles run diagonally between the sternum and pelvis. External – lie above them, responsible for bending and turning the body, as well as the body tilts to the sides. The rectus abdominis muscle begins with the pelvic bone and stretches to the sternum. Lifts the body and legs are designed specifically for its training. The functions of the rectus abdominis muscle: back support (stabilizing function) and forward bending of the body.
The cubes are formed by transverse connective fibers and tendon lines that cross the press in the transverse direction. The rectus abdominis muscle is a flat long muscle divided by a vertical line of left and right tendons. Because of its color, the dividing line is called the white line of the abdomen. Conventionally, the rectus abdominis muscle is divided into three sections: the lower, middle and upper. However, there is no exercise that would involve only one part of the rectus muscle, without at all involving another in the work.
The largest is the external oblique muscle of the abdomen, the internal oblique muscles are invisible, because lie under the outside. They have transverse fibers. Straight and external oblique abdominal muscles – the only abdominal muscles that are visible visually. The abdominal muscles are combined with a number of other departments in the so-called core muscle group (core muscles).
The cortex includes all the abdominal muscles, adductor muscles of the thigh, small and medium gluteus muscles, the posterior surfaces of the thigh, subosseous, coraco-brachial muscles, and some others. Together, they are responsible for stabilizing the position of the body and transferring the force from foot to hand. In fact, any heavy (basic) exercise takes place with their direct participation. Knowing this, many powerlifters never do specialized exercises at the press – enough load in the squats and bench press.
The development of the bark muscles allows you to straighten your posture, reduces the load on the spine. Very often, the sports plateau in the press and squats is associated with the underdeveloped bark muscles.