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21 Cards in this Set
- Front
- Back
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Radial Symmetry |
Parts are arranged around a central axis |
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Bilateral Symmetry |
Right and Left halves are mirror images |
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Asymmetry |
No symmetrical appearance |
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Tissue Organization |
Tissues can be organized into layers, functional units |
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Acoelomate |
3-layered bodies with a body cavity |
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Pseudocoelomate |
3-layered bodies with a cavity between the endoderm and mesoderm |
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Eucoelomate |
3-layered bodies with a cavity (coelem) within the mesoderm |
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Open circulatory system |
Blood flows through the coelomic spaces in the tissue as well as in the blood vessels |
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Closed circulatory system |
Blood flows entirely though the vessels |
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Cnidocytes |
Contain a nematocyst (stinging organelle) |
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Gastrodermis |
Lines the inside of the gastrovascular tube |
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Epidermis |
Outside of the gastrodermis and mesoglea |
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Mesoglea |
Dividing line between the epidermis and gastrodermis |
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Planaria (Left to right) Eye spot, Gastrovascular cavity, pharynx |
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Auricle |
Touch and chemical sensory cells |
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Annelids |
Demo was earthworm |
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Prostomium |
Fleshy, dorsal tuberance |
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Clitellum |
organ that "sticks out" and is used for reproduction |
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Blood vessel/nerve sizes on the dorsal and ventral sides |
Dorsal: blood vessel is big, nerve is small Ventral: nerve is big, blood vessel is small |
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Umbo |
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Mantle |
Tissue that secretes the shell |
