1. Describe the role of gap junctions in communication

2. Compare/contrast paracrines and autocrines

3. Describe the properties of protein receptors on cell membranes

4. Compare/contrast agonists and antagonists

5. Describe the mechanism by which lipophilic messengers produce a response in the target cell

6. Describe the mechanisms by which lipophobic messengers produce a response in the target cell

7. Describe receptor-operated channels

8. Describe membrane transducers

9. Describe second messenger systems

10. Describe the cAMP second messenger system in detail

11. Explain how calcium can interact with calmodulin to cause a cellular response

12. Define homeostasis

13. Compare/contrast local control and reflex controls

14. Compare/contrast negative and positive feedback

15. Describe feedforward controls

16. Define biological rhythms

17. Compare/contrast the nervous and endocrine systems