Signals

Definition

In biology, signals refer to the various types of communication between cells. These can be chemical or physical cues that trigger a response in another cell.

Related terms

Hormones:

These are chemical messengers produced in one part of the body that stimulate or inhibit specific processes in another part.

Neurotransmitters: These are chemicals released by nerve cells to send signals to other nerve cells, muscles, or glands.

Pheromones: These are chemical substances produced and released into the environment by an animal, especially a mammal or an insect, affecting the behavior or physiology of others of its species.