Proboscis (Rostellum, Plural. Rostella)

Proboscis (Rostellum, Pl. Rostella): what is it and how does it function

The proboscis, also known as Rostellum or multiple Rostella, is a mobile structure on the head of some tapeworms such as Taenia and Echinococcus. It is able to retract inward and is equipped with special hooks that help the worm attach to the intestinal walls of its host.

The proboscis is an important adaptive mechanism of these worms that helps them survive in the intestines of their hosts. It helps nourish them and also protects them from intestinal motility and other factors that might try to remove them from the body.

However, despite its importance to the survival of worms, the proboscis can also cause problems for their hosts. For example, it can cause intestinal obstruction, which can lead to serious health consequences.

In addition, many people suffer from the pilonidal sinus, which is a short, hairy area that runs at the top of the intergluteal groove. Infection may periodically occur in this area, leading to pain and pus discharge from it. To eliminate the infection, it is surgically opened and washed out.

Although the proboscis and the epithelial coccygeal duct are different structures, they are both examples of how anatomy and physiology can be important to our health and well-being. Understanding how they function can help you make informed choices about your health and treatment for any problems associated with these formations.



The proboscis or Rostellum is a movable and retractable structure that can be found on the head of tapeworms of the genera Taenia and Echinococcus. It is equipped with special hooks that allow it to attach to host tissues and receive nutrients.

The proboscis is an important element in the life cycle of tapeworms and plays a role in their reproduction and development. However, if the proboscis gets inside the host's body, it can cause various diseases, such as cysticercosis or echinococcosis.

Surgical opening of the tract can help eliminate the infection and prevent further development of the disease. However, it should be remembered that treatment of the proboscis should only be carried out under the supervision of a doctor.



As you know, the animal world is an incredibly diverse and dynamic phenomenon that constantly reveals new species and forms to us. One such amazing creation of nature is the proboscis, also known as Rostellum - a mobile and inwardly retractable body that consists of very hook-like threads, and is found on the heads of ribbon flukes such as Taenia or Echinococcus. These worms are considered parasites because they use their host to grow and reproduce. But what abilities do they have, besides harming humans?

So, this amazing proboscis can reach from 3 to 20 centimeters in length. If we are talking about individuals of the genus Taenia, then this is 1 - 15 centimeters, and in the case of a species of the genus Echinococcus, then 1-1.5 meters. The end of the proboscis can also vary in color from yellow to dark brown. As a rule, it is black in color and has many hairs, which provides better adhesion to the host’s skin. It is located at the end of the head in the form of a lump in which the intestines are enclosed.

Once an infected worm enters the host's body, it migrates through the circulatory system into the body. Then, after a few weeks, the parasite's tail is soldered to the wall of the host's digestive tract and reaches the final part of the intestine, where it feeds