Platyhelminthes A phylum including tapeworms, flukes and planarians.
digestion/circulation A planarian inserts it's pharynx into the food and secretes enzymes that break down the food and draws it into the gastrovascular cavity for further
Endoderm Inner germ layer, gives rise to interior organs, etc.
Ectoderm Outer germ layer
Mesoderm Middle germ layer
Bilateral symmetry A body plan in which the left and right halves of an organism match each other
Eyespots Sense organs of planarians that specialize in light reception. Consists of bundles of nerve cords gathered to a specific spot on the anterior end and trail through the planarians body in a "ladder" type of nervous system.
Auricles Pointed projections on each side of the planarians head, that are especially sensitive to touch, water currents, food and chemicals. Also known as sensory lobes.
Parasite An organism that lives in or on another organism and obtains its pre-digested nutrients from their host. Usually harms the host organism in its activities.
Gastrovascular cavity Part of the digestive system of a planarian and consists of one cavity that has two main branches in the posterior end and one main branch on the anterior end. It extends throughout the entire body using smaller branches for distribution.
Flame cells Side branches of the excretory canals that terminate in the mesenchyme in tiny enlargements. Each has a hollow centre where a tuft of cilia beat, looking like a flickering flame, that is continuous with the rest of the tubes. They regulate the water content of the tissues.
Turbellaria Class of flatworms including planarians.
Trematoda Class of flatworms including flukes.
Hooks and suckers Body parts flukes use to hang on to structures they feed on.
Uterus A long very coiled tube that stores immense amounts of eggs and connects to the genital pore and yolk glands.
Cestoda Class of flatworms including tapeworms.
Scolex A tapeworms minute, knob-like head with four suckers.
Excretory canals Body structures involved in excretion in a tapeworm.
Chlonorchis sinensis Example of a fluke.
Taenia pisiformis Example of a tapeworm.
Tegument A flukes modified epidermis that protects against digestive enzymes and immune systems of a hosts body.
Cuticle A tapeworms protective covering that is secreted by epidermal cells and protects the parasite against the host.
Proglottids Body segments of a tapeworm that contain individual reproductive systems.
digestion/circulation A planarian inserts it's pharynx into the food and secretes enzymes that break down the food and draws it into the gastrovascular cavity for further
Endoderm Inner germ layer, gives rise to interior organs, etc.
Ectoderm Outer germ layer
Mesoderm Middle germ layer
Bilateral symmetry A body plan in which the left and right halves of an organism match each other
Eyespots Sense organs of planarians that specialize in light reception. Consists of bundles of nerve cords gathered to a specific spot on the anterior end and trail through the planarians body in a "ladder" type of nervous system.
Auricles Pointed projections on each side of the planarians head, that are especially sensitive to touch, water currents, food and chemicals. Also known as sensory lobes.
Parasite An organism that lives in or on another organism and obtains its pre-digested nutrients from their host. Usually harms the host organism in its activities.
Gastrovascular cavity Part of the digestive system of a planarian and consists of one cavity that has two main branches in the posterior end and one main branch on the anterior end. It extends throughout the entire body using smaller branches for distribution.
Flame cells Side branches of the excretory canals that terminate in the mesenchyme in tiny enlargements. Each has a hollow centre where a tuft of cilia beat, looking like a flickering flame, that is continuous with the rest of the tubes. They regulate the water content of the tissues.
Turbellaria Class of flatworms including planarians.
Trematoda Class of flatworms including flukes.
Hooks and suckers Body parts flukes use to hang on to structures they feed on.
Uterus A long very coiled tube that stores immense amounts of eggs and connects to the genital pore and yolk glands.
Cestoda Class of flatworms including tapeworms.
Scolex A tapeworms minute, knob-like head with four suckers.
Excretory canals Body structures involved in excretion in a tapeworm.
Chlonorchis sinensis Example of a fluke.
Taenia pisiformis Example of a tapeworm.
Tegument A flukes modified epidermis that protects against digestive enzymes and immune systems of a hosts body.
Cuticle A tapeworms protective covering that is secreted by epidermal cells and protects the parasite against the host.
Proglottids Body segments of a tapeworm that contain individual reproductive systems.