Hydra- Habit, Habitat, External Morphology, Internal Structures

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Hydra- Habit, Habitat, External Morphology, Internal Structures

Hydra are inconspicuous freshwater relatives of corals, sea anemones, and jellyfish that are classified under the phylum Cnidaria, Class Hydrozoa, Order Anthomedusae/Anthoathecata, and Family Hydroidea. It is essentially a sedentary organism living attached to stones, pebbles, and water plants, but can get released from the substratum and swim. The name Hydra was …

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Visceral leishmaniasis (Kala-azar)- Causes, Lab diagnosis, Treatments

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Visceral leishmaniasis (Kala-azar)

What is Visceral leishmaniasis (Kala-azar)? Visceral leishmaniasis is sometimes known as systemic leishmaniasis or kala-azar. Kala-azar also is known as black fever or Dumdum fever in Asia. It usually occurs 3 to 6 months after being bitten by a sandfly. It primarily infects the reticuloendothelial system. It damages internal organs, such as …

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Cysticercosis- Clinical manifestations, diagnosis, treatment

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Cysticercosis

What is Cysticercosis? Cysticercosis refers to the tissue infection caused by the metacestode, or larval stage, of Taenia solium. It is acquired by the accidental ingestion of T. solium eggs. It is endemic to many parts of the developing world, including Latin America, Asia, and sub-Saharan Africa. Cysticercosis is the most common …

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Ancylostoma duodenale- An Overview

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Ancylostoma duodenale

What is Ancylostoma duodenale? Ancylostoma duodenale is the most dangerous parasitic roundworm, causing serious infection in humans. It is commonly known as Old World hookworm. It is common in the tropical, subtropical, and temperate region of Asia, Africa, Europe, the Pacific Islands, and the Southern States of America. Ancylostoma duodenale (Greek ankylos—hooked; …

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Wuchereria bancrofti- Habitat, Morphology and Life Cycle

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Wuchereria bancrofti- Habitat, Morphology and Life Cycle

Wuchereria bancrofti is a filarial nematode that causes Wuchereriasis or filariasis(commonly called elephantiasis) in human beings. The name of this worm is given Wuchereria bancrofti in honor of the two scientists Wucherer and Bancroft who made a considerable contribution in studying the disease caused by these worms. Image Source: Study and Score and …

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Plasmodium vivax- Habitat, Characteristics, Structure, Life cycle

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Plasmodium vivax

Plasmodium vivax is a widely distributed protozoal parasite and a human pathogen that is responsible for human malaria. P vivax is not virulent as compared to Plasmodium falciparum. Plasmodium vivax can cause severe disease and death due to the enlargement of the spleen. They are transmitted through the female Anopheles mosquito. Classification …

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Taenia solium- Life history ,development and adaptations

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Taenia solium- Life history ,development and adaptations

Image Source: Laboratory Diagnostic Assistance (DPDx), CDC. Life history and Development of Taenia solium 1. Copulation and fertilization The life cycle of Taenia solium is digenetic, involving two hosts. But the life cycle of tapeworm is simple and without a free larval stage. Fertilization is preceded by copulation, inserting cirrus into the …

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Taenia solium- Nutrition, respiration, excretory, nervous, reproductive system

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Taenia solium- Nutrition, respiration, excretory, nervous, reproductive system

Nutrition in Taenia solium Tapeworm completely lacks alimentation in all stages of life-history. It is clear that tapeworms absorb nutrients from their hosts and that such movement of materials from the hosts into parasites is an essential element of host-parasite relationships. The soluble nutrients like glucose, amino acids, glycerol, etc., diffuse directly …

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