The fundiform ligament splits around the penis and unites with which fascia to form the scrotal septum?

• A. Buck's fascia
• B. Deep fascia of penis
• C. Dartos fascia
• D. Superficial fascia of perineum

Answer: (C)

The split fibers of the fundiform ligament fuse with the dartos fascia to form the scrotal septum. The dartos fascia is the subcutaneous fascial layer of the scrotum that contains the dartos muscle, giving the scrotal skin its wrinkling and helping regulate testicular temperature. Buck's fascia is the deep penile fascia surrounding the corpora, and the deep fascia of the penis is essentially Buck's fascia, neither of which form the septum. The superficial fascia of the perineum (Colles' fascia) is a different layer and does not participate in creating the scrotal septum.