Cysticercus (sɪsˈtɪsərkəs) is a Greek-derived term that refers to a larval stage in the life cycle of a tapeworm. The word is spelled with a "c" instead of an "s" because the Greek word kystis, meaning "bladder," originally contained a kappa (Κ) rather than a sigma (Σ). The -ercus ending comes from the Latin word cercus, meaning "tail," which is also found in the names of other tapeworm larvae, such as Echinococcus granulosus. Proper spelling of scientific terms is crucial for clarity and accuracy in research and communication.
Cysticercus is a term used in biology and medicine to refer to a stage in the life cycle of certain tapeworms, specifically in the genus Taenia. It is a larval or developmental stage that represents the encysted form of the tapeworm, which can be found in the tissues of intermediate hosts.
During this stage, the tapeworm larvae are enclosed within a cyst or protective sac, which allows them to survive and persist in the host's tissue without causing immediate harm or being detected by the immune system. The cysticercus stage serves as a means of transmission and survival for the tapeworm species, as it allows them to infect and continue their life cycle in a definitive host, such as a human or other animal.
The cysticercus stage is commonly found in intermediate hosts, including pigs, cattle, and other vertebrates, where it can develop in various organs or tissues, such as muscles, brain, or eyes. The presence of cysticerci in the tissues of these intermediate hosts can lead to the formation of cysts, inflammation, or damage to the affected organ. In humans, the presence of cysticerci can lead to a condition known as cysticercosis, which can cause a wide range of symptoms and health problems depending on the location and number of cysticerci present in the body.
In conclusion, cysticercus refers to the encysted larval stage of certain tapeworms found in intermediate hosts, a stage that plays a vital role in the transmission and survival of the tapeworm species.
A genus of bladder-worms, now known to be the encysted larvae of various tapeworms; the generic name is, however, retained as a convenience in description.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "cysticercus" has its etymology rooted in Latin and Greek. "Cysticercus" is derived from the Latin word "cystis", which means "bladder" or "sac", and the Greek word "kerkos", which means "tail". The combination of these two words refers to the structure of the parasite cysticercus, which has a bladder-like shape with a tail.