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20 Cards in this Set
- Front
- Back
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all mammals are characterized by two notable features:
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hair
mammary glands |
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in addition, all mammals:
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breathe air
have four-chambered hearts are endotherms generate body heat internally |
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what helps mammals generate body heat?
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metabolism
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hair is part of the ____ system.
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integumentary
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what is subcutaneous fat?
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a layer of fat located beneath the skin and helps conserve body heat
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explain how sweat helps cool the body
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by evaporating
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what do mammals do that lack sweat glands?
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pant
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the ability of mammals to regulate their body heat from within is an example of what?
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homeostasis
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large amounts of food must be taken in by a mammal to maintain homeostasis. why?
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because of its high metabolic rate
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what evolved in mammals to allow them to eat foods other than insects?
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the form and function of their jaws and teeth
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rumen
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a stomach chamber in which newly swallowed plant food is stored and processed
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how does the diaphragm assist in breathing?
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pulls the bottom of the chest cavity downward, increasing its volume
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the mammalian circulatory system is divided into ___ completely separate loops with a ____ - chambered heart.
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two, four
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the kidneys of a mammal help maintain homeostasis by:
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filtering urea from the blood, and excreting excess water or retaining needed water
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list the 3 parts of the mammalian brain:
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cerebrum, cerebellum, medulla oblongata
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cerebral cortex
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outer layer of the cerebrum which is the center of thinking
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what is the function of the endocrine system?
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released hormones to regulate body activities
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what system protects the mammal from disease?
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immune
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regardless of the mode of development, all newborns do what?
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feed on their mothers milk
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parental behavior is an adaptation that is the result of?
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natural selection and other evolutionary processes
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