Cercaria
The free-swimming trematode larva that emerges from its host snail; it may penetrate the skin of a final host (as in schistosoma of man), encyst on vegetation (as in Fasciola), in or on fish (as in Clonorchis), or penetrate and encyst in various arthropod hosts. Body and tail are greatly varied in form, and specialised function is adapted to the particular life cycle demands of each species.
See: sporocyst, redia.
Origin: g. Kerkos, tail
Cercaria The free-swimming trematode larva that emerges from its host snail; it may penetrate the skin of a final host (as in schistosoma of man), encyst on vegetation (as in Fasciola), in or on fish (as in Clonorchis), or penetrate and encyst in various arthropod hosts. Body and tail are greatly varied in form, and..
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..
