The muscles of the anterior abdominal wall
The rectus abdominis (m. rectus abdominis) tilts the body anteriorly. It is part of the abdominal and provides intra-abdominal pressure, due to which the internal organs are held in position. In addition, it engages in acts of urination, defecation and childbirth. This long, flat muscle located in the anterior abdominal wall on either side of the white line (linea alba), which extends from the xiphoid process of sternum to the pubic symphysis. Start point of the rectus abdominis muscle is located on the xiphoid process of the sternum and cartilages of V-VII edges, and place attachment - to the pubic bone between the pubic tubercle and pubic joint (symphysis). Muscle bundles rectus abdominis muscle is interrupted by three or four laterally spaced tendon bridges, two of which are located above the navel, the third - the navel, and the fourth (poorly developed) - below.
|In Fig. 109.
The muscles of the front wall of the abdomen and pelvis
1 - the rectus abdominis;
2 - the iliac fascia;
3 - ilio-psoas;
4 - mezhyamochkovaya ligament;
5 - external iliac artery;
6 - external iliac Vienna;
7 - internal locking arm;
8 - muscle lifting the anus;
9 - outside locking arm
Pyramidal muscle belly (m. pyramidalis) pulls the white line in the abdomen. The muscle is triangular in shape, starts at the pubic bone, anterior to the attachment rectus abdominis muscle, and is attached at various levels of the lower part of the white line.
a., aa. — arteria, arteriae (artery, the artery)
lig., ligg. — ligamentum, ligamenta (ligament, the ligaments)
m., mm. — musculus, musculi (muscle, the muscle)
n., nn. — nervus, nervi (nerve, the nerve)
r., rr. — ramus, rami (branch)
s. — seu (or)
v., vv. — vena, venae (vienna)