BIOS 255 Unit 1 Exam

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BIOS 255 Unit 1 Exam

• Receptor

–Answer structure specialized to detect a stimulus

• Stimulus

–Answer something that causes an action to happen

• Sense organ

–Answer a structure that is composed of nervous and other tissue types that enhance a stimulus

• Phasic receptor

–Answer "phase out;" detect a stimulus but quickly adapt even if the stimulus continues

• Tonic receptor

–Answer adapt more slowly, fire APs more steadily

• Sensation

–Answer subjective awareness to a stimulus

• Perception

–Answer conscious awareness to a stimulus

• Transduction

–Answer the conversion of one form of energy into another

• Sensory receptors transmit

–Answer modality, location, intensity, and duration 1 / 2

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• Modality

–Answer Type of info ex. taste, smell, pressure; the info follows a road which is how the brain knows what it is (line code)

• Location

–Answer receptive Fields help the brain know where it's coming from

• Intensity

–Answer degrees of the sense (ex. bright vs dim, loud vs soft)

• Duration

–Answer how long stimulus last, sensed By changes in firing frequency

• Classification of receptors

–Answer Stimulus modality, origin of the stimulus, distribu- tion of receptors

• Thermoreceptors

–Answer Detect temperature

• Photoreceptors

–Answer detect light

• nociceptors

–Answer detect pain

• chemoreceptors

–Answer detect chemicals; gustation and olfaction

• mechanoreceptors

–Answer

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