Which term describes cytokine signaling that acts on the same cell that secreted it?

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Multiple Choice

Which term describes cytokine signaling that acts on the same cell that secreted it?

Explanation:
Autocrine signaling is when a cell releases a cytokine and the same cell has receptors for it, so it responds to its own signal. This creates a self-stimulating loop that acts locally on the secreting cell. In contrast, paracrine signaling targets nearby cells, endocrine signaling travels through the bloodstream to distant cells, and juxtacrine signaling requires direct contact between neighboring cells (often via membrane-bound signals). An example is a T cell producing IL-2 that then promotes its own growth and proliferation, illustrating autocrine action.

Autocrine signaling is when a cell releases a cytokine and the same cell has receptors for it, so it responds to its own signal. This creates a self-stimulating loop that acts locally on the secreting cell. In contrast, paracrine signaling targets nearby cells, endocrine signaling travels through the bloodstream to distant cells, and juxtacrine signaling requires direct contact between neighboring cells (often via membrane-bound signals). An example is a T cell producing IL-2 that then promotes its own growth and proliferation, illustrating autocrine action.

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