They can settle in any human organ, even in the brain, but more often they enter the lungs, and then through saliva into the digestive organs. Once in a favorable human environment for them, worms gradually develop to an adult state, migrating with blood flow throughout the body. Their eggs find themselves on the ground together with the faeces of a sick person, then fall into the intermediate organism of the animal or immediately find the host in the human body, penetrating through soil or mud. A threat to human health is represented by both larvae and adult helminths. The life cycle of such worms consists of 1-3 stages of larvae maturing into a matured individual. The reproductive system is also well developed.Have developed nervous and digestive systems.These helminths are dioecious, and the female is usually larger than the male.Some features of the structure of nematodes: The most characteristic feature of their appearance is a round section and an elongated fusiform shape of the body, due to which they easily adapt to the environment and successfully penetrate into the tissues of the human body, reaching the blood vessels or a suitable organ, most often the intestine. Some of them do not harm a person, but there are predatory nematodes in people who are dangerous to their health, as they cause some very dangerous diseases: ascaridosis, strongyloidosis, etc. ![]() Round worms, or nematodes - the most diverse type of helminths, numbering several tens of thousands of species.
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