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6 Cards in this Set
- Front
- Back
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closed circulatory system
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A heart pumps blood through a network of blood vessels that form a closed loop.
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Open circulatory system
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A simple heart pumblood through blood vessels that empty into sinues,or spaces in the animal's body.
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Three mian body part of an arthropod
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1.head
2. thorax 3.abdomen |
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Relationship between parasite and host
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The parsite eats the host
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Four charateristic of arthropods
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1.a segment body with specialized parts
2.jointed limbs 3.an exoskeleton 4. a well-developed nervous system |
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Three functions of neurons
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1.they allow animals to sense their environment
2.they carry messages around the body 3.these messages sent around the body control an animal's actions |
