SI session 7 Animal physiology

2. the part of a negative feedback loop that changes a parameter to bring it back to its set point
6. an organism that must allow its body temperature to vary in order to survive in its environment
8. salmon develop gills as they grow in order to increase the _____________ ___________ through which oxygen exchange can happen
11. diffusion and exchange with the environment is easier with __________ organisms, that have high surface area to volume ratios
12. when a physiological mechanism begins, then its processes perpetuate and increase its actions, an example would be giving birth
13. the relationship between the changing size of an organism and its shape or other physical properties
14. As a lizard grows, its size stays the same, with the same proportions

1. when an adaptation comes at a cost, for example a male peacock having very ornate feathers
2. an organism that can regulate and produce its own body heat
3. when an animal's phenotype changes in response to environmental change, similar to phenotypic plasticity
4. between two organisms that perform similar physical functions, they have differently shaped skeletons due to difference in size
5. metabolic rate of animals __________ as they get smaller
7. the part of a negative feedback loop that receives information from environmental stimuli
9. and often heritable, genetic change that is seen in a population over time in a population due to environmental factors
10. the ability to maintain a constant internal environment