Endothermic and Ectothrmic Animals

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Endothermic and Ectothrmic Animals

• SC 6-3.3

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Vertebrate Animals

• All animals respond to changes in the
  environmental temperature.
• Vertebrate animals differ in their abilities to
  regulate body temperature.

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Vertebrate Animals

• There are two different types of vertebrate
  animals, and they respond changes in temperature
  based on this type.
• Two types of vertebrates
• Endothermic (warm-blooded)
• Ectothermic (cold-blooded)

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Endothermic Animals

• Animals which maintain a nearly constant internal
  temperature and do not change with the
  environment.

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Endothermic Animals

• When the outside temperature is too hot, an
  endothermic animal can cool off by
• Sweating
• Panting
• Changing Position
• Changing Location

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Endothermic Animals

• Sweating and panting generate heat loss through
  evaporating water.
• Changing position and location allow the animal
  to find a cooler environment in the shade or
  shelter.

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Endothermic Animals

• Endothermic animals must eat much more often than
  ectothermic animals since it takes energy to
  maintain a constant body temperature.
• Example
• A lion must eat its weight in food every seven to
  ten days.

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Endothermic Animals

• Types of Endothermic animals
• Birds
• Mammals

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Ectothermic Animals

• Animals which have an internal body temperature
  that changes with the temperature of the
  environment.

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Ectothermic Animals

• They must gain heat to perform internal
  activities.
• Example Digestion

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Ectothermic Animals

• If the environment is cold, ectothermic animals
  become slow moving and sluggish.
• Some animals must bask in the Sun.
• Example Snakes or Lizzards
• Some animals must move to a warmer area before
  they can move about or hunt for food.
• Example Some Fish

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Ectothermic Animals

• If the temperature is too hot, ectothermic
  animals will need to find a cooler temperature or
  burrow into the ground to keep its body cool.

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Ectothermic Animals

• Ectothermic animals take on the temperature of
  their surroundings so they dont have to use food
  energy to keep warm.
• This means they dont have to eat as often.

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Ectothermic Animals

• Types of Ectothermic Animals
• Fish
• Amphibians
• Reptiles

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Venn Diagram