Anatomy of the Human Penis: The Relationship of the Architecture Between Skeletal and Smooth Muscles

摘要: To investigate the anatomy of ischiocavernosus muscle, bulbospongiosus and tunica albuginea to determine their relationships smooth which is a key element penile sinusoids, we performed cadaveric dissection histologic examinations 35 adult human male cadavers. The corpora cavernosa bilayered structure that can be divided into an inner circular layer outer longitudinal layer. incomplete coat absent between 5-o'clock 7-o'clock positions where 2 triangular ligamentous structures form. These structures, termed ventral thickening, are continuation anterior fibers left right muscles. On dorsal aspect, 1-o'clock 11-o'clock positions, region called radiating aspect bilateral In cavernosa, skeletal muscle contains supports essential in sinusoids. This relationship plays important part blood vessels' ability supply meet requirements for erection, whereas corpus spongiosum, partially entraps allow ejaculation when erect. glans penis, however, distal ligament, tunica, arranged centrally acts as trunk penis. Without this strong would too weak bear buckling pressure generated during coitus. A significant difference exists thickness ligament potent impotent groups (P < or =.01). Together, anatomic within penis explain many physiologic phenomena, such ejaculation, intracavernous surge pull-back force against anal constriction. improvement modeling anatomic-physiologic these has clinical implications surgeries.