Classification of Receptors: Complexity Simple receptors Usually a single modified dendrite General sense Touch, pressure, pain, vibration, temperature Complexity High modified dendrites, organized into complex structures ear, eye. Special senses Vision, hearing. smell tasteClassification of Receptors: Complexity • Simple receptors – Usually a single modified dendrite – General sense – Touch, pressure, pain, vibration, temperature • Complexity – High modified dendrites, organized into complex structures • ear, eye. – Special senses – Vision, hearing, smell, taste