Comparative Circulatory System Kit
Students compare and contrast the open circulatory system of the crayfish and the simple closed circulatory system of the earthworm. Closed circulatory systems are explored as they dissect a squid containing multiple single-chambered hearts, a frog with a single 3-chambered heart, and a pig heart that represents the 4-chambered heart of mammals and birds. The student guide provides dissection instructions and labeled illustrations.
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Comparative Circulatory System 8-Station Kit Item #221045
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Comparative Circulatory System 8-Station Kit with Dissection Tools Item #221046
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Comparative Circulatory System 1-Station Kit Item #221047
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Comparative Circulatory System 1-Station Kit with Dissection Tools Item #221048