Answer
The scrotum is sac composed of skin muscle and connective tissue that contains the testes. It hangs between the thighs in the upper part of the perineal area. The skin tends to be darker than in other parts of the body, and it has few hairs; however, it is richly supplied with sensory nerves.
A median septum or partition divides the scrotum into left and right halves-- the division being marked externally by a seam or raphe. Each half of the scrotum contains one testis. The septum prevents infection in one side of the scrotum from travelling to the other side and affecting the testis on that side. Usually, the left testis hangs lower than the right so that they do not press against each other during thigh movements.
Work Step by Step
The spermatic cord is located in the posterior of the scrotum. It comprises connective tissue in which are blood vessels. lymphatic vessels, testicular nerves, and the ductus deferens-- a sperm duct. From the testis the spermatic cord travels upward, behind and superior to the testes , and continues across the pubis anteriorly; it then and passes through the external ring of the inguinal canal (of the groin) to emerge into the pelvic cavity by way of the internal inguinal ring.
