Slide 1

Homeostasis: Animal Form and Function

Slide 2

Learning Targets 1. I can apply the significance of surface area to volume ratio when explaining different animal internal exchange surfaces. 2. I can explain how interactions and coordination between organs and organ systems provide essential biological activities 3. I can describe both positive and negative feedback, provide one example of each kind, and explain which type of feedback helps to maintain homeostasis. 4. I can explain different homeostatic strategies for thermoregulation seen in animals. 5. I can explain what metabolic rate is and how it influenced by the following: size of animal energy budget of the animal

Slide 3

Positive and Negative Feedback: What is the difference?

Slide 4

Which type of feedback provides homeostasis?

Slide 5

Questions to condsider:

Slide 6

Slide 7

Slide 8

Surface area/volume ratio in action Small intestine lungs Blood

Slide 9

Figure 40.4a Food Mouth Animal body Respiratory system CO 2 O2O2 Cells Interstitial fluid Excretory system Circulatory system Nutrients Digestive system Heart B l o o d Anus Unabsorbed matter (feces) Metabolic waste products (nitrogenous waste) External environment