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15 Cards in this Set
- Front
- Back
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Cladistics
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focuses on shared derived homologous traits & classifies organisms based solely on their evolutionary relationship.
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Hypothermia
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refers to any condition in which the temperature of a body drops below the level required for normal
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Hypothalamus
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controls body temperature, hunger, thirst, and circadian cycles.
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High Altitude Cerebral Edema (or HACE)
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is a severe (usually fatal) form of altitude sickness. HACE is the result of swelling of brain tissue from fluid leakage. It generally occurs after a week or more at high altitude. Severe instances can lead to death if not treated quickly.
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pulmonary edema (HAPE)
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affects the lungs. While not nearly as life threatening as HACE in the initial stages, failure to descend to lower altitudes or receive medical treatment can also lead to death.
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parallel evolution:
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1) independent evolution of similar traits in closely related species, such as the increase in dental size among a number of early human ancestors.
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Convergent evolution.
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: independent evolution of similar traits in more distantly related species, such as the evolution of flight in both birds and flies
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Homologous traits:.
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traits found in different species that have a common origin but may have different functions
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Estrus
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A time during the month when females are sexually receptive (in “heat”)
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1.Primitive (ancestral) traits:
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1. traits that are shared w/ an earlier ancestral form. The 5 digits of the human hand and foot are primitive traits inherited from earlier vertebrate ancestors.
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Derived (specialized) trait:
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1. traits that have changed from the ancestral state/ appeared by mutation (the horse’s single toe)
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Incisor
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chisel-shaped front teeth used for cutting, slicing, and gnawing food.
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Canine
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teeth located in front of the jaw behind the incisors used for puncturing & defense.
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Premolar:
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1 of the types of Back teeth used for crushing & grinding food. |
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Molar
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the teeth furthest back in the jaw used for crushing & grinding food
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