Which type of organ detects environmental signals and converts them to nerve impulses?

Question

BlackTom AI · Accepted Answer

Consider the prompt: 'Which type of organ detects environmental signals and converts them to nerve impulses?' 
Option 1: the brain. While the brain processes sensory information, it is not the organ that detects environmental signals on its own; detection happens in peripheral receptors, not centrally in the brain. 
Option 2: a sense organ. This is the correct concept: sense organs contain sensory receptors that detect environmental stimuli (like light, sound, touch) and transduce them into nerve impulses that the nervous system can interpret. 
Option 3: an accessory gland. Accessory glands have secretory roles and are not primarily involved in detecting environmental signals or converting them into nerve impulses. 
Option 4: the spinal cord. The spinal cord is a major conduit and processing center for nerve signals, but it does not serve as the primary detector of environmental stimuli; detection occurs in sense organs, with signals then traveling to the spinal cord for processing. 
In summary, only a sense organ serves both as the detector of environmental signals and the converter of those signals into nerve impulses, whereas the brain, spinal cord, and accessory glands do not perform that initial sensory detection function.

Which type of organ detects environmental signals and converts them to nerve impulses?单项选择题

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