1. Cell Communication

2. Direct Contact

3. Local Signaling
Paracrine Signaling
Synaptic

4. Distant Signaling
Hormonal

5. Signal Transduction Pathway
Reception
Transduction
Response

6. Stages of Intracellular Signaling
Reception
G-Protein receptors

7. Stages of Intracellular Signaling
Reception
Enzymatic Receptors

8. Stages of Intracellular Signaling
Reception
Gated Ion Channels

9. Stages of Intracellular Signaling
Reception
Intracellular Receptors

10. Stages of Intracellular Signaling
Transduction

11. Cellular Response
Amplification

12. Cellular Response
Specificity