Plasmodium Life Cycle — a labelled NEET Biology diagram with a definitions lexicon.
Plasmodium Life Cycle Labelled parts: Plasmodium, Human host, Female Anopheles mosquito, Sporozoites, Liver cells, Liver schizogony, Merozoites, Red blood cells, Erythrocytic schizogony, Gametocytes, Fever, Mosquito bite, Salivary glands, Proboscis, Oocyst, Ookinete, Fertilization, Gametes. This is a genus of protozoan parasites responsible for causing malaria in humans. The life cycle involves asexual reproduction in the liver and red blood cells, and sexual reproduction in the mosquito vector. FYI: The parasite infects humans through the bite of an infected female Anopheles mosquito and multiplies in the liver (exoerythrocytic stage) and RBCs (erythrocytic stage). This is the asexual multiplication process of the Plasmodium parasite that occurs in the liver cells (hepatocytes). The parasite undergoes multiple divisions (merogony) to form many merozoites, which then enter the bloodstream. FYI: This initial stage of multiplication in the liver is often asymptomatic, allowing the parasite to build up a large population before causing symptoms. This is the asexual multiplication process of Plasmodium that occurs within the red blood cells (RBCs). The parasite multiplies, rupturing the RBCs and releasing merozoites, which causes the cyclical fever characteristic of malaria. FYI: The cyclical rupture of RBCs by merozoites is responsible for the periodic symptoms (fever, chills) associated with malaria. This mosquito species is the primary vector responsible for transmitting the Plasmodium parasite, which causes malaria. The female mosquito acquires the parasite during a blood meal. FYI: Only the female Anopheles mosquito can transmit the malaria parasite, and the parasite undergoes sexual reproduction within the mosquito's gut. A proboscis is a long, tubular mouthpart found in certain insects, such as butterflies and mosquitoes. It is adapted for sucking liquid food, like nectar or blood. FYI: The structure of the proboscis is an adaptation that allows specialized feeding, maximizing the efficiency of liquid intake. Ookinete is a motile, elongated stage of the Plasmodium parasite found in the female gamete. It is responsible for penetrating the wall of the mosquito gut and initiating the sexual cycle. FYI: The ookinete is the stage that facilitates the transmission of the parasite from the human host to the mosquito vector. The process where a haploid male gamete (sperm) fuses with a haploid female gamete (ovum) to form a diploid zygote. This restores the species' characteristic chromosome number. FYI: The formation of the zygote marks the beginning of the embryonic development, and the initial mitotic divisions are called cleavage.