<prompt> Rectus sheath is contributed by?External and internal oblique aponeurosisInternal oblique and transversus abdominis aponeurosisExternal, internal oblique and transversus abdominis aponeurosisAponeurosis of Internal oblique and transverse abdominis fascia transversalis  <response>: The rectus sheath, also called the rectus fascia, is formed by the aponeurosis of the transverse abdominus and the internal and external oblique muscle. It contains the rectus abdominis and pyramidalis muscles. 