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The transverse abdominal helps to compress the ribs and viscera, providing thoracic and pelvic stability. It can contract during the exhalation phase of respiration to force air out of the thorax. The transverse abdominal also helps a pregnant woman to deliver her child.
The linea alba is a white, fibrous band that is made of the bilateral rectus sheaths that join at the anterior midline of the body. These enclose the rectus abdominis muscles (a pair of long, linear muscles, commonly called the “sit-up” muscles) that originate at the pubic crest and pubic symphysis, and extend the length of the body’s trunk.
The conjoint tendon (previously known as the inguinal aponeurotic falx) is a sheath of connective tissue formed from the lower part of the common aponeurosis of the abdominal internal oblique muscle and the transversus abdominis muscle, joining the muscle to the pelvis. It forms the medial part of the posterior wall of the inguinal canal.
Pelvic Floor Dysfunction in Men: Causes, Symptoms, and Treatment This article was reviewed by Martin Miner, MD. Although we don’t pay much attention to our pelvic floor muscles, they make ...
Continence is the ability to withhold bowel movements, and urinary stress incontinence (the lack of bladder control due to pelvic floor dysfunction) can result from weak core musculature. Pregnancy Core muscles, specifically the transversus abdominis , are used during labor and delivery.
The rectus sheath (also called the rectus fascia [1]) is a tough fibrous compartment formed by the aponeuroses of the transverse abdominal muscle, and the internal and external oblique muscles. It contains the rectus abdominis and pyramidalis muscles, as well as vessels and nerves.
[5] [6] The anterior abdominal wall is made up of four muscles—the rectus abdominis muscle, the internal and external obliques, and the transversus abdominis."The two internal muscles, the internal oblique, and the transverse abdominis, respond more to increases in chemical or volume-related drive than the two external muscles, the rectus ...
Diastasis recti, or rectus abdominis diastasis, is an increased gap between the right and left rectus abdominis muscles. [1] The increased distance between the muscles is created by the stretching of the linea alba , a connective collagen sheath created by the aponeurosis insertions of the transverse abdominis , internal oblique , and external ...