Cell Signaling

The ability of the cells to receive, process and transmit signals with its environment as well as with itself is termed as cell signaling. Extracellular signals are the signals which originate from outside the cells. Various physical agents can be responsible for extracellular signals such as voltage, mechanical pressure, light, temperature, etc. The transformation of a signal into a chemical form marks the beginning of signal transduction. This can either directly activate an ion channel o...