For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below.Not all words or phrases will be used; each word or phrase should be used only once. amplification G protein phosphorylation contact-dependent K+ channel receptor endocrine neuronal target epithelial paracrine Cells can signal to each other in various ways.A signal that must be relayed to the entire body is most efficiently sent by __________ cells, which produce hormones that are carried throughout the body through the bloodstream.On the other hand, __________ methods of cell signaling do not require the release of a secreted molecule and are used for very localized signaling events.During __________ signaling, the signal remains in the neighborhood of the secreting cell and thus acts as a local mediator on nearby cells.Finally, __________ signaling involves the conversion of electrical impulses into a chemical signal.Cells receive signals through a __________, which can be an integral membrane protein or can reside inside the cell.