communication and homeostasis each person in group research one set of words e.g. text p 4, 5, 6, 7...
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Communication and homeostasis
each person in group research one set of words e.g. text p 4, 5, 6, 7 – then share your ideas
1) homeostasis, positive feedback and negative feedback
2) stimulus, response, internal and external environment
3) sensory receptor, effector cells and cell signalling
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Ectotherms and endotherms - text p8 - 11
why do animals need to control body temperature?
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Ectotherms and endotherms – can you describe and explain the graphs?
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Keeping the core temperature constant in endotherms – peripheral
parts vary
body temperature in warm and cold environments
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thermograms
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Controlling body temperature • Why is it important for animals to maintain their
core body temperature within certain limits?
• Are these animals ectotherms or endotherms? mammals insects reptilesbirds amphibians spiders
• State one advantage and one disadvantage of being an ectotherm rather than an endotherm; include the meaning of the two words
• Describe one behavioural and one physiological adaptation of locusts which help them to regulate their body temperature
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Make a summary chart / poster / diagram to show how your body maintains a constant core body
temperatureas an endotherm
(include physiological and behavioural responses) Make sure you include:-
• peripheral temperature receptors• the hypothalamus
• effectors in skin, muscles and liver• behaviour
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Understanding skin structure
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Changes in blood flow through skin so more heat is lost by conduction, convection, radiation and evaporation of
sweat
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Compare the food requirements of the 2 mammals per gram of body mass. Why are they different? (P11 text)
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Penguins in Australia and the Antarctic – explain if the fairy penguins would survive in
the cold
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Emperor penguins huddling – how does this help thermoregulation?