When a cell releases a signal molecule into the environment and a number of cells in the immediate vicinity respond, this type of signaling is
A)typical of hormones.
B)autocrine signaling.
C)paracrine signaling.
D)endocrine signaling.
E)synaptic signaling.

Question

Quizplus · Accepted Answer

Paracrine signaling is the type of signaling where a cell secretes a signaling molecule (ligand) that acts on neighboring cells in the immediate vicinity. The ligand is released into the extracellular fluid and diffuses through the area to reach nearby cells. This type of signaling is common during development and in the immune system, where it allows for rapid responses to local stimuli. Autocrine signaling involves a cell releasing a ligand that acts on its own receptors, while endocrine signaling involves the release of hormones that act on distant target cells. Synaptic signaling is a type of signaling that occurs between neurons at a synapse.

When a Cell Releases a Signal Molecule into the Environment