The anterolateral group constitutes the anterolateral wall of abdominal cavity, including external oblique muscle, internal oblique muscle, transverse abdominal muscle and rectus abdominis muscle. The posterior group includes psoas major and quadratus lumborum.
The inguinal canal is a fissure located between the platysma muscle and tendon of the anterolateral abdominal wall, located at the lower part of the anterolateral abdominal wall and above the medial half of the inguinal ligament, with a length of about 4-5cm, through which the spermatic cord of men or the round ligament of uterus of women passes.
Extended data
Abdominal fascia includes superficial fascia, deep fascia and intra-abdominal fascia.
1, the superficial fascia is one layer in the upper abdomen, and it is divided into shallow and deep layers below the navel. The superficial layer contains fat, called the deep layer of Kanpa fascia, and contains elastic fibers, called Scappa fascia, which continue downward with the fascia lata of thigh and inward downward with the superficial fascia of perineum and scrotum.
2. The deep fascia can be divided into several layers, covering the superficial and deep layers of the muscles of the anterolateral group respectively.
3. Intra-abdominal fascia is attached to the inner surface of abdominal cavity walls. Most of the fascia names are the same as the covered muscles, such as subphrenic fascia, lumbar fascia, iliopsoas fascia, pelvic fascia and transverse fascia.