Homeostasis: Animal Form and Function

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Homeostasis: Animal Form and Function

Learning Targets I can apply the significance of surface area to volume ratio when explaining different animal internal exchange surfaces. I can explain how interactions and coordination between organs and organ systems provide essential biological activities I can describe both positive and negative feedback, provide one example of each kind, and explain which type of feedback helps to maintain homeostasis. I can explain different homeostatic strategies for thermoregulation seen in animals. I can explain what metabolic rate is and how it influenced by the following: size of animal energy budget of the animal

Positive and Negative Feedback: What is the difference?

Which type of feedback provides homeostasis?

Questions to condsider:

Surface area/volume ratio in action lungs Blood Small intestine Surface area/volume ratio in action

Metabolic waste products (nitrogenous waste) Figure 40.4a External environment CO2 Food O2 Mouth Animal body Respiratory system B l o d Heart Cells Digestive system Interstitial fluid Nutrients Circulatory system Figure 40.4 Internal exchange surfaces of complex animals. Excretory system Anus Unabsorbed matter (feces) Metabolic waste products (nitrogenous waste)