Lecture 8 - Click to edit Master subtitle style Sensory...

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Unformatted text preview: Click to edit Master subtitle style Sensory Mechanisms Sensory Pathways Convey information about the external and internal environment to the brain Announcements Reading: Ch 10 pg. 175-82 Homework #4 Extra credits Outline Sensory pathways Sensory receptors General senses Special senses Sensory Pathways Sensory reception Detection of a stimulus by sensory receptor Sensory transduction Conversion of a physical or chemical stimulus into an electrical signal Sensory transmission Information is passed to CNS Sensory Pathways Sensation Awareness of the stimulus Depends on which part of the brain receives info Intensity of Stimulus Perception: attaching meaning to the sensation Types of Sensory Receptors Structures specialized to respond to a specific type of stimulus Classified according to the stimulus to which they respond 5 classes Some receptors are neurons, others are specialized epithelial cells Types of Sensory Receptors Mechanoreceptors Respond to physical deformation/distortion in receptor Thermoreceptors Respond to temperature Photoreceptors Respond to light Chemoreceptors Respond to the binding chemicals Pain receptors Respond to tissue damage or very strong stimuli General Senses Touch, pressure, temperature, body position, pain Temperature Body position Pain General Senses:...
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This note was uploaded on 04/07/2008 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas at Austin.

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Lecture 8 - Click to edit Master subtitle style Sensory...

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