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The rectus abdominis is a very long flat muscle, which extends along the whole length of the front of the abdomen, and is separated from its fellow of the opposite side by the linea alba. Tendinous intersections (intersectiones tendineae) further subdivide each rectus abdominis muscle into a series of smaller muscle bellies.
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 ...
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.
Muscles Worked: A plank is a full-body exercise, but specifically, it works your transverse abdominis, rectus abdominis (aka the six-pack), internal and external obliques and scapular (shoulder ...
Superior rectus muscle; Inferior rectus muscle; Medial rectus muscle; jaw (muscles of mastication, the closing of the jaw is adduction): masseter; pterygoid muscles (lateral and medial) temporalis; vocal folds. Lateral cricoarytenoid muscle
A posterior rectus sheath composed of the posterior portion of the aponeurosis of the internal oblique muscle and the aponeurosis of the transversus abdominis passes behind the rectus abdominis muscle. [2] [3] All aponeuroses of the rectus sheath unite at (and and decussate across) the midline, forming the linea alba. [3] Below the arcuate line
Lower limb, Thigh/Hip, Medial compartment (adductor muscles) anterior surface of inferior pubic ramus [12] lesser trochanter and linea aspera of femur: obturator artery: anterior branch of obturator nerve [12] adducts hip [12] gluteus medius, gluteus minimus: 2 1 adductor longus: Lower limb, Thigh/Hip, Medial compartment (adductor muscles)
As the superior (or proximal) pair of rectus abdominis muscles contract, the vertebral column is able to slightly flex forward. [citation needed] If more forward flexion is needed, the middle pair of rectus abdominis muscles can contract along with the distal pair to allow the vertebral column to flex forward even further. [citation needed]