The name for a structure that is specialized to detect a stimulus is a(n):

• A. synapse
• B. dendrite
• C. axon
• D. receptor

Answer: (D)

Verified step by step guidance

1. Understand the question: The problem is asking for the name of a structure that is specialized to detect a stimulus. This means we are looking for a biological structure that can sense changes in the environment or internal conditions.
2. Review the options provided: The options are synapse, dendrite, axon, and receptor. Each of these terms refers to a specific part of the nervous system or a related structure.
3. Define each term: A synapse is the junction between two neurons where communication occurs. A dendrite is a branch-like structure of a neuron that receives signals. An axon is a long projection of a neuron that transmits signals. A receptor is a specialized structure that detects stimuli, such as light, sound, or chemical signals.
4. Match the definition to the question: Since the question asks for a structure that detects a stimulus, the correct term is 'receptor,' as it is specifically designed to sense and respond to environmental or internal changes.
5. Conclude the reasoning: Based on the definitions and the question's requirements, the correct answer is 'receptor,' as it is the structure specialized for detecting stimuli.