Exam 52: Intestinal Cestodes

The double-pored tapeworm,Diphyllobothrium caninum,consisting of many small proglottids,measures 10 to 70 cm in length as an adult.The scolex contains four suckers and an armed rostellum.The intermediate host in which infective cysticercoids develop is the:

The Diphyllobothrium latum tapeworm can reach up to 10 meters in length and can have more than 3000 to 4000 proglottids.The definitive host and reservoir host,respectively,are:

The mode of infection for which of the following organisms is the ingestion of cysticercoid in an infected arthropod or by the direct ingestion of the egg? Autoinfection may also occur.

A stool specimen is examined,and the following characteristics are observed: ·15 to 18 lateral branches on each side ·Scolex with four suckers ·No hooklets The intermediate hosts of this tapeworm are:

The T.solium organism,which causes cysticercosis and can grow to be 1.5 to 8 meters long,contains 7 to 13 lateral uterine branches along the proglottid.The intermediate host is: