What structures can function as a receptor:
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Answer: D. All of the above
Explanation
Biological receptors can be single cells, specialized neuron endings, or complex organs. All these structures detect specific environmental physical or chemical stimuli effectively. Sensory transduction begins when any of these receptive structures is activated. Receptor cells convert physical energy into electrical neural impulses for the brain. Sensory systems rely on specialized receptors tuned to light, sound, pressure, or chemicals. Receptor organs like the eye integrate multiple cell types to optimize stimulus detection.
Photoreceptors in the retina detect light waves to initiate visual sensory processing. Skin houses various nerve endings acting as tactile receptors for touch and temperature. Medical physiologists study how receptor sensitivity influences human sensory perception thresholds. A single cell is too restrictive because complex organs also function as receptors. Neuron endings ignore specialized multicellular receptor organs involved in complex sensory systems. Receptor organs exclude microscopic individual receptor cells operating independently in tissues.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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