Frenular delta
The frenular delta in human anatomy is located below the penile glans along the penile ventral body. Named by pathologist Kenneth McGrath in 2001, it is composed of the preputial mucosa, and is triangular in shape. The frenulum is located at the tip of the triangle, the ridged bands form the sides of the triangle, and the junctional rim forms the triangle's base. This area, especially the frenulum itself, is reported to be the most sensitive area of the penis. The delta is highly innervated, and is considered to be a specific erogenous zone. Frenular delta The