How is the body of a tapeworm organized?

Proglottids come in three different varieties: immature, mature, and gravid. They are all equipped with the whole complement of male and female reproductive organs, and internal fertilization takes place. In certain species, self-fertilization can take place within or between proglottids.

The scolex neck region continuously produces proglottids as long as the scolex is attached and living; the mature proglottids that contain eggs are the ones that are furthest away from the scolex. The proglottid chain can be as long as fifteen to twenty-nine feet.

Releasing from the tapeworm's end segment, mature proglottids migrate as independent motile proglottids or leave the host in faeces, limiting the parasite's length and transferring the developing embyo to the exterior in the host's feces. Mature proglottids are essentially bags of eggs, each of which is infective to the appropriate intermediate host.

The body of a tapeworm is organized into three main parts: the scolex, the neck, and the proglottids.