Structures that are specialized for the detection of a stimulus, such as pain and heat, are referred to as a sensory receptor. Receptors can be classified into three categories based on the stimulus origin, modality, and its location in the body. The classification of taste receptors: (i) based on the modality of the stimulus: chemoreceptors; (ii) based on the stimulus origin: exteroceptors; and (iii) based on the location of receptors in the body: specific senses. Olfaction is responsible for sensing smell, and it responds to airborne chemicals referred to as odorants. These odorants are sensed by receptor cells of the epithelium (present in the nasal cavity roof) called the olfactory mucosa.

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Chapter 16.3, Problem 15BYGO

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Structures that are specialized for the detection of a stimulus, such as pain and heat, are referred to as a sensory receptor. Receptors can be classified into three categories based on the stimulus origin, modality, and its location in the body. The classification of taste receptors: (i) based on the modality of the stimulus: chemoreceptors; (ii) based on the stimulus origin: exteroceptors; and (iii) based on the location of receptors in the body: specific senses. Olfaction is responsible for sensing smell, and it responds to airborne chemicals referred to as odorants. These odorants are sensed by receptor cells of the epithelium (present in the nasal cavity roof) called the olfactory mucosa.

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