It is composed of trapezius, latissimus dorsi, rhomboid major, rhomboid minor and levator scapulae. Shane (kayfabe) suffered laryngeal contusion, trapezius and rhomboid strains. A parallelogram with sides of equal length (equilateral) is a rhombus but not a rhomboid. It is deep to the trapezius, and is located directly inferior to the rhomboid minor. Blade cross-sections can be triangular, square, rhomboid or flat hexagonal. More dorsally, active Dpp signaling represses "rhomboid" thus confining it to the lateral blastoderm nuclei. If the rhomboid major is torn, wasted, or unable to contract, scapular instability may result. Rhomboid prisms are used to laterally displace a beam of light without inverting the image. The borders are composed of rows of squares filled with geometric diamond or rhomboid patterns. The rhomboid major is considered a superficial back muscle. As the word "rhomboid" suggests, the rhomboid major is diamond-shaped. It is short, flat, and rhomboid in form. A parallelogram with right angled corners is a rectangle but not a rhomboid.