Paracrine signaling
A)involves secreting cells acting on nearby target cells by discharging a local regulator into the extracellular fluid.
B)requires nerve cells to release a neurotransmitter into the synapse.
C)occurs only in paracrine yeast cells.
D)has been found in plants but not animals.
E)involves mating factors attaching to target cells and causing production of new paracrine cells.

Question

Quizplus · Accepted Answer

Paracrine signaling involves cells secreting local regulators (such as growth factors, cytokines, or prostaglandins) into the extracellular fluid. The local regulators then act on nearby target cells, which must have receptors for the specific regulator in order to respond to it. This type of signaling is important for coordinating cell behavior, such as in embryonic development or wound healing.

Paracrine Signaling