CHAPTER OUTLINE
■ CLASSIFICATION OF SENSORY RECEPTORS
■ SENSORY RECEPTOR RESPONSES
Graded Responses
Adaptation
■ PAIN
Visceral Pain
Referred Pain
■ TASTE
Taste Reception
Taste Sensations
Temperature and Taste
Depraved Appetite
■ SMELL
Olfactory Region Structure
Odor Perception
Pheromones
■ HEARING AND EQUILIBRIUM
External Ear
Middle Ear
Inner Ear
Vestibular Structure and.Function
Cochlear Structure and.Function
Summary of Sound Reception
■ VISION
Structure and Functions of.the Eye
Chemistry of Vision
Adaptation to Varying Light
Field of Vision
Eyeball Movements and Accessory Structures
Sensations result from stimuli that initiate afferent impulses, which eventually reach a conscious level in the cerebral cortex.
Sensations include the somatic senses - pain, cold, heat, touch, pressure, and a group known as the special senses - sight, hearing, taste, smell, and orientation in space. All sensations involve receptor organs; the simplest is a bare nerve ending and the most complex are those associated with the special senses.
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