book

• Senses brain receives info about environment and body
• Sensation process initiated by stimulating sensory receptor
• Perception conscious awareness of stimulus
• somatic senses sensory information about body and environment
• visceral senses information about internal organs
• sensory receptor is capable of responding stimuli
• mechanoreceptor is mechanical stimuli
• chemoreceptor is chemical stimuli
• photoreceptor respond to light
• thermoreceptor respond to temp. changes
• nociceptor respond to stimuli; sensation of pain