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Mammals. What Makes a Mammal?. 5 Things All Mammals Have in Common: All breathe air All have 4-chambered heart All are endotherms (warm-blooded) All have mammary glands All have hair. Endotherms (Warm-Blooded). Mammals maintain a constant body temp Humans keep body at 98.6 

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What makes a mammal
What Makes a Mammal?

  • 5 Things All Mammals Have in Common:

    • All breathe air

    • All have 4-chambered heart

    • All are endotherms (warm-blooded)

    • All have mammary glands

    • All have hair


Endotherms warm blooded
Endotherms (Warm-Blooded)

  • Mammals maintain a constant body temp

    • Humans keep body at 98.6

  • High metabolic activity keep temp high

  • Hair helps mammals keep warm

  • Sweat glands help cool down


Feeding jaws
Feeding - Jaws

  • Jaws & Teeth help tell us what an animal eats

  • Molars = herbivores (plant eaters)

  • Canines = carnivores (meat eaters)

  • Incisors = teeth used for cutting or tearing


Circulation
Circulation

  • 4-Chambered Heart

    • Left Atrium

      • Blood in from lungs

    • Left Ventricle

      • In from left Atrium; out to body

    • Right Atrium

      • Blood in from body

    • Right Ventricle

      • In from right Atrium; out to lungs


Diversity of mammals
Diversity of Mammals

  • Monotremes = egg laying mammals

  • Marsupials = raise young in external pouch

  • Placental Mammals

    • Raise embryo in a placenta

    • Nutrients, Oxygen, Carbon Dioxide, & Waste exchanged through placenta


Primates
Primates

  • Adaptations:

    • Binocular Vision

    • Well-developed Brains

    • Long fingers and toes

    • Arms that rotate around shoulder

  • Homonoids: great apes

    • Include Homo sapiens, gorillas, chimpanzees

    • Have opposable thumbs


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