Question

Which of the following is a type of local signaling in which a cell secretes a signal molecule that affects neighboring cells?

A) hormonal signaling
B) autocrine signaling
C) paracrine signaling
D) synaptic signaling

Answer 1

• Paracrine signaling is a type of local signaling in which a cell secretes a signal molecule that affects neighboring cells.
• The signaling molecules involved in paracrine signaling are known as paracrine factors. These factors are only able to move over a short distance and thus, are able to exert their effect on the nearby cells only.
• An example of a paracrine factor is the fibroblast growth factor family.