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Homeostasis - PowerPoint PPT Presentation


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Homeostasis. Homeostasis. The maintenance of a stable internal environment within an organism. Behavioral adaptations to maintain?. molting. panting. How do we maintain?. Humans? . Why do we need to do these things? (answer to come!). Diurnal.

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homeostasis1
Homeostasis
  • The maintenance of a stable internal environment within an organism
how do we maintain
How do we maintain?
  • Humans?

Why do we need to do these things? (answer to come!)

diurnal
Diurnal
  • An organism’s behavior characterized by activity during the day and sleeping at night.
nocturnal
Nocturnal
  • An organism’s behavior characterized by activity during the night and sleeping during the day.
  • Traits include: sensitive vision (usually large eyes, sensitive hearing, sensitive smell)
nocturnal animals
Nocturnal Animals

Tarsier (tar-sea-er)

Aardvark

endotherm
Endotherm
  • Animals that actively maintain a stable body temperature by generating heat
  • Humans, birds and mammals
  • “Warm-blooded”
ectotherm
Ectotherm
  • Animals whose body temperature changes with their environment
  • Most animals: reptiles, fish, insects
  • “Cold-blooded”
how to stay warm cool
How to stay Warm/Cool?

Ectotherm:

  • Change temperature with environment
  • Change position or location based on outside temperature
  • Much more behavioral ways to maintain

Endotherm:

  • Maintain internal temperature
  • Burn a lot of calories doing this
  • Need fur/fat/shelter to stay warm
  • Need water/mud/cold weather to stay cool