BIOB34H3 Chapter Notes -Cell Surface Receptor, Signal Transduction, Extracellular Fluid
Document Summary
Two of the most familiar types of cellular communication involve the nervous system and endocrine system. The endocrine system is involved in controlling and regulating almost every physiological process including growth, development, metabolism, and ion and water balance. Signal transduction pathways cause a response within the target cell. Chemical messengers can travel from a signaling cell to nearby target cells by diffusion in paracrine communication. These messengers can even affect the signaling cell in autocrine communication. Long distance cell to cell communication involves the endocrine and nervous system: endocrine messengers are called hormones, the nervous system uses chemical messengers called neurotransmitters. Release of a chemical messenger from the signaling cell into the extracellular environment. Transport of the chemical messenger through the extracellular environment. Communication of the signal to the target cell via receptor binding. The most important distinction between different systems for cellular communication is the distance across which the chemical messenger must travel.