Chapter 11
Local/paracrine signaling: In paracrine signaling a signaling cells releases messenger molecules into the extracellular fluid and these local regulators influence nearby cells. Long distance signaling: Hormones are chemical signals that travel to more distant cells. Long distance signaling is going to be seen the most in the nervous system. There are 3 stages of cell signaling... 1. Reception 2. Transmission 3. Response RECEPTION There are three basic types of membrane receptors: