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Definition
| Segments of bone or some other hard substance that are arranged into a backbone |
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Definition
| A rod of tough, flexible material that runs the length of a creature's body, providing the majority of its support |
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Definition
| A skeleton on the inside of a cerate's body, typically composed of bone or cartilage |
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Definition
| A soft tissue inside the bone that produces blood cells |
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Definition
| The portion of the skeleton that supports the head, neck and trunk |
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Definition
| The portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it |
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| Closed circulatory system |
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Definition
| A circulatory system in which the oxygen-carrying blood cells never leave the blood vessels |
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Definition
| Blood vessel that carry blood away from the heart |
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Definition
| Tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and the cells of the body |
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| Blood vessel that carry blood back to the heart |
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| The lobes of the brain that receive signals from the receptors in the nose |
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Definition
| The lobe of the brain that integrate sensory information and coordinate the creature's response to that information |
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Definition
| The lobes that coordinate vital functions, such as those of the circulatory and respiratory systems, and transport signals from the brain to the spinal cord |
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Definition
| The process by which the male places sperm inside the female's body, where the eggs are fertilized |
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Definition
| The process by which the female lays eggs and the male fertilizes them once they are outside of the female |
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Definition
| Development that occurs in an egg that is hatched outside the female's body |
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Term
| Ovoviviparous development |
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Definition
| Development that occurs in an egg that is hatched inside the female's body |
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Definition
| Development that occurs inside the female, allowing the offspring to gain nutrients and vital substances from the mother through a placenta |
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Definition
| A life cycle in which creatures are hatched in fresh water, migrate to salt water as adults, and then go back to fresh water in order to reproduce |
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Definition
| A mixture of salts and phospholipids that aids in the breakdown of fat |
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Definition
| A heart chamber that receives blood |
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Definition
| A heart chamber from which blood is pumped out |
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Definition
| Lacking an internal mechanism for regulating body heat |
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Definition
| A state of extremely low metabolism and respiration, accompanied by lower-than-normal body temperatures |
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Definition
| The lobes of the brain that receive signals from the recepters in the eyes |
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Definition
| The lobe that controls involuntary actions and refines muscle movement |
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