What is the primary purpose of sensory receptors?

The primary purpose of sensory receptors is to detect and convert stimulus energy. Sensory receptors are specialized neurons or cells distributed throughout the body that respond to specific types of stimuli, such as light, sound, touch, temperature, and chemicals. When a stimulus is detected, these receptors convert the energy from the stimulus into electrical signals that can be processed by the brain, resulting in sensory perception.

For example, photoreceptors in the eyes respond to light, converting it into nerve impulses that the brain interprets as visual images. Similarly, mechanoreceptors in the skin respond to mechanical pressure or distortion, allowing us to perceive touch or vibration. This fundamental role of sensory receptors is essential for our interaction with the environment and our overall sensory experience.