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24 Cards in this Set
- Front
- Back
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Analogous Traits
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Physical traits with similar function in two species but a different trait
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Homologous trait
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physical traits in two species that have similar structures but may or may not have similar function
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primitive traits
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traits that have not changed from ancestral state
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phenetics
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Overall physical similarities among organisms used in forming biological classifications
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Cladistics
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Evolutionary relationships between organisms used to form classifications
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Homiotherms
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mammals are this, capable of maintaining body temperature under most circumstances
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What does the hindbrain consist of?
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Medulla oblongata, pons, cerebellum
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Medulla oblongata
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the neurons controlling breathing, death instantly if destroyed
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Pons
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Serve as a relay station carrying signals from various parts of the cerebral cortex to the cerebellum
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Reticular formation
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A region running thro the middle of the hindbrain, receives sensory input
-involved in sleep, arousal |
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Cerebellum
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Consists of 2 deeply convoluted hemispheres, coordinates body movements
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Forebrain
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chemical sensing, smell
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Hypothalmus
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automatic nervous system controlled, destruction causes death due to lack of regulation of body temp and blood chemistry
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Reptiles have enlarged areas of what parts of the brain?
Humans have an enlarged what area? |
Reptiles: midbrain and hindbrain since they rely more on vision and hearing
Humans: forebrain responsible for sensory info and coordination |
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Cerebrum
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Area of forebrain that is associated with memory, learning and intelligence
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Generalized structure
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biological structures adapted to a wide range of conditions and used in very general ways
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Specialized structure
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structures adapted to a narrow range of conditions and used in specific ways
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binocular stereoscopic vision
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overlapping fields of vision with both sides of the brain receiving images from both eyes, allowing for depth perception
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Notochord
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a flexible internal rod that runs along the back of an animal. In humans it is present during gestation and is later re-absorbed
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Vertabrata
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Sub phylum, animals that have backbones
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Homodontic Teeth
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Reptiles have teeth that are all the same and that are continually replaced throughout life
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Heterodontic teeth
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Mammals have different types of teeth and only two sets of them
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Prehensile
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Capable of grasping
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Behavioral Ecology
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Switched in 1985 the study of behavior from an ecological and evolutionary perspective
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