Homeostasis.  The maintenance of a stable internal environment (body temperature) within an organism.

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Presentation transcript:

Homeostasis

 The maintenance of a stable internal environment (body temperature) within an organism

Behavioral Adaptations to Maintain Homeostasis panting molting

How do Humans Maintain Homeostasis?

Diurnal  An organism’s behavior characterized by activity during the day and sleeping at night.

Diurnal animals

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 Tarsier (tar-sea-er) Aardvark

Endotherm  Animals that actively maintain a stable body temperature by generating heat  Humans, birds and mammals  “Warm-blooded”

Ectotherm  Animals whose body temperature changes with their environment  Most animals: reptiles, fish, insects  “Cold-blooded”

How to stay Warm/Cool? 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 Ectotherm: - Change temperature with environment - Change position or location based on outside temperature - Much more behavioral ways to maintain