PATHOLOGY

Detailed explanation-1: -Sperm production in the testes takes place in coiled structures called seminiferous tubules. Along the top of each testicle is the epididymis. This is a cordlike structure where the sperm mature and are stored. The release process starts when the penis fills with blood and becomes erect.

Detailed explanation-2: -Next to each testicle, the epididymis is a tube where sperm is stored. From here, sperm are transported to the vas deferens.

Detailed explanation-3: -The motile tail of a sperm is a long flagellum, whose central axoneme emanates from a basal body situated just posterior to the nucleus. As described in Chapter 16, the axoneme consists of two central singlet microtubules surrounded by nine evenly spaced microtubule doublets.