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Mammals. Last unit!. What are mammals?. Vertebrate Tetrapod Endothermic Amniotic . Mammalian Integumentary Adaptations. Female mammals produce milk for their young Milk is produced in the mammary glands Mammary glands are modified sweat glands

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mammals

Mammals

Last unit!

what are mammals
What are mammals?
  • Vertebrate
  • Tetrapod
  • Endothermic
  • Amniotic
mammalian integumentary adaptations
Mammalian Integumentary Adaptations
  • Female mammals produce milk for their young
    • Milk is produced in the mammary glands
    • Mammary glands are modified sweat glands
  • Mammals have hair (at some point in their lives)
mammalian skeletal adaptations
Mammalian Skeletal Adaptations
  • Jaw: single bottom bone makes up the jaw
  • Middle ear – 3 bones make up the middle ear
    • Malleus (Hammer)
    • Incus (Anvil)
    • Stapes (Stirrup)
mammalian muscular adaptations
Mammalian Muscular Adaptations
  • Diaphragm
    • Muscle below the lungs/heart
    • Contracts/relaxes to assist with breathing
    • Separates body into two cavities
      • Thoracic cavity
      • Abdominal cavity
mammalian circulatory system
Mammalian Circulatory System
  • 4 chambered heart
  • Endothermic
  • Systemic and pulmonary circuits
mammalian brain
Mammalian Brain
  • Brain stem
    • Medulla oblongata
  • Cerebellum
  • Pituitary gland
  • Pineal gland
  • Cerebrum
    • Hemispheres
    • Higher mammals = increased amount of convolusions (sulci) to increase surface area
3 subclasses
3 Subclasses
  • Prototheria or Monotremes
  • Metatheria or Marsupials
  • Eutheria or placental mammals
protheria monotremes
Protheria/ Monotremes
  • Egg laying mammals
  • Platypus
  • Spiny Anteater
metatheria marsupials
Metatheria/Marsupials
  • Pouch to carry young
  • Still possess a placenta
    • Not well developed
eutheria placental mammals
Eutheria/Placental Mammals
  • Diverse group
    • Armadillos
    • Bats
    • Elephants
    • Shrews
    • Whales
    • Humans
  • Uterus
    • Placenta – fetus is directly connected to the mother
rat systems
Rat Systems
  • Muscular
  • Respiratory
  • Cardiovascular
  • Digestive
  • Excretory
  • Reproductive