Autocrine signaling is a form of cell communication in which a cell produces and releases signals that bind to receptors on its own surface, leading to changes within the same cell.
Endocrine Signaling: This involves hormones being secreted into the bloodstream by certain glands, where they can reach cells throughout the body.
Paracrine Signaling: This is when cells produce signals that affect nearby cells. It's like whispering a message to your neighbor.
Juxtacrine Signaling: In this type of signaling, messages are passed directly from one adjacent cell to another through contact or shared junctions. It's like passing a note hand-to-hand in class.