Multiple Choice
The normal endocrine controls can be directly overridden by the __________ system.
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16. The Endocrine System
Introduction to the Endocrine System
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Which of the following signals would affect local cells by releasing chemicals into the extracellular fluid?
A
endocrine
B
autocrine
C
paracrine
D
neural
Verified step by step guidance1
Understand the different types of signaling: Endocrine, Autocrine, Paracrine, and Neural. Each has a distinct mechanism of action and range of effect.
Endocrine signaling involves hormones released into the bloodstream, affecting distant target cells. This is not localized.
Autocrine signaling occurs when a cell releases a chemical signal that binds to receptors on its own surface, affecting itself.
Paracrine signaling involves the release of chemical signals into the extracellular fluid, affecting nearby cells. This is a local form of signaling.
Neural signaling involves neurotransmitters released from neurons, affecting adjacent cells, typically across a synapse. This is also localized but specific to neural pathways.
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