Description[edit]
The body of an adult Raillietina is a typical tapeworm structure, composed of a series of ribbon-like body segments, gradually enlarging from the anterior end towards the posterior. It is whitish in colour, highly elongated, dorso-ventrally flat, and entirely covered with a tegument. The entire body is divisible into 3 parts, namely the head region called scolex, followed by an unsegmented neck or growth region, and then by highly segmented body proper called strobila.[5] The scolex is a bulbous knob-like structure bearing suckers and a rostellum, which are the organs of attachment to the host. A defining structure from those of other tapeworms is a single prominent rostellum surrounded by four suckers.[6] Further, an important diagnostic character among the different species of the genus is the number and arrangement of hooks and spines on the scolex.[7] The suckers are poorly developed, and completely devoid of special devices or spines.[8] The scolex measures ~134 μ in diameter, and the hooks are 7-10 μ in length.[9] Individual segments in the strobila are called 'proglottids' and are entirely covered with hair-like microtriches.[10] These microtriches are the absorptive structures for feeding, and there are no digestive organs. As all other cestodes, they are hermaphrodite. A set of both male and female reproductive systems is present in each proglottid
Description[edit]
The body of an adult Raillietina is a typical tapeworm structure, composed of a series of ribbon-like body segments, gradually enlarging from the anterior end towards the posterior. It is whitish in colour, highly elongated, dorso-ventrally flat, and entirely covered with a tegument. The entire body is divisible into 3 parts, namely the head region called scolex, followed by an unsegmented neck or growth region, and then by highly segmented body proper called strobila.[5] The scolex is a bulbous knob-like structure bearing suckers and a rostellum, which are the organs of attachment to the host. A defining structure from those of other tapeworms is a single prominent rostellum surrounded by four suckers.[6] Further, an important diagnostic character among the different species of the genus is the number and arrangement of hooks and spines on the scolex.[7] The suckers are poorly developed, and completely devoid of special devices or spines.[8] The scolex measures ~134 μ in diameter, and the hooks are 7-10 μ in length.[9] Individual segments in the strobila are called 'proglottids' and are entirely covered with hair-like microtriches.[10] These microtriches are the absorptive structures for feeding, and there are no digestive organs. As all other cestodes, they are hermaphrodite. A set of both male and female reproductive systems is present in each proglottid
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