Term
| Define Sensory Information |
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Definition
Subconscious or conscious registration of a stimulus in the CNS.
Stimulus can be any change in external and/or internal environment. |
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Term
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Definition
It is always Conscious.
The CNS is stimulated at the highest, outermost part of the brain; the cerebral cortex. |
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Term
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Definition
Receptors vary in how quickly they adapt.
Tactile and smell receptors are rapidly adapting.
NOCICEPTORS = for pain
PROPRIOCEPTORS = for body position (these are slow to adapt..if at all) |
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Term
| Describe Phantom Limb Sesation |
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Definition
Stimuli that are perceived in the higher brain centers that are PROJECTED back to the receptors in the brain.
It creates the illusion of sensation at the site of the stimulus. |
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Term
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Definition
| A stimulus is detected by sensory receptors and move the impulse along to the CNS |
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Term
| The Classifications of Sensory Receptors |
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Definition
Location
Cellular Characteristics
Stimulus |
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Term
Sensory Receptors are classified by Location.
Name the 3 categories: |
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Definition
1. Exteroceptors
2. Proprioceptors
3. Interoceptors |
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Term
Sensory Receptors are classified by Cellular Characteristics.
Name the 3 categories: |
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Definition
1. Free Nerve Endings
2. Encapsulated Nerve Endings
3. Cellular Receptors |
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Term
Sensory Receptors are classified by Stimulus.
Name the 5 categories: |
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Definition
1. Mechanoreceptors
2. Thermorecptors
3. Nociceptors
4. Photoreceptors
5. Chemoreceptors |
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Term
Exteroceptors are a category of Sensory Receptors by Location.
Describe them. |
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Definition
They are cutaneus receptors located near the surface of the skin and superficial fascia.
Usulayy respond to external stimuli such as touch, pressure, vibration, pain, and temperature. |
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Term
Interoceptors are a category of Sensory Receptors by Location.
Describe them. |
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Definition
Also known as Viseroreceptors / Organs.
Located internally within the organs. Responds to internal stimuli such as pressure, stretch, and chemical changes. |
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Term
Proprioceptors are a category of Sensory Receptors by Location.
Describe them. |
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Definition
Located within skeletal muscles, joint capsules, tendons, and fascia that detect stretch and tension (tugs and pulls.)
They provide information about physical orientation and movement. |
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Term
Free Nerve Endings are a category of Sensory Receptors by Cellular Characteristics.
Describe them. |
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Definition
The are simple structures.
They are dendrites that respond directly to stimuli. |
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Term
Encapsulated Nerve Endings are a category of Sensory Receptors by Cellular Characteristics.
Describe them. |
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Definition
SImple Structure.
Dendrites that are wrapped in a connective tissue coating. |
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Term
Cellular Receptors are a category of Sensory Receptors by Cellular Characteristics.
Describe them. |
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Definition
They are complex structures.
They are associated with special senses such as sight, taste, smell etc. |
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Term
Mechanoreceptors are a category of Sensory Receptors by Stimulus.
Describe them. |
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Definition
| Respond to mechanical deformations of tissues, such as stretching, bending of cells. |
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Term
Thermoreceptors are a category of Sensory Receptors by Stimulus.
Describe them. |
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Definition
| Respond to change in temperature. |
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Term
Nociceptors are a category of Sensory Receptors by Stimulus.
Describe them. |
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Definition
| Respond to pain - either actual or near damage to tissues. |
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Term
Photoreceptors are a category of Sensory Receptors by Stimulus.
Describe them. |
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Definition
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Term
Nociceptors are a category of Sensory Receptors by Stimulus.
Describe them. |
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Definition
| Respond to pain - either actual or near damage to tissues. |
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Term
Chemoreceptors are a category of Sensory Receptors by Stimulus.
Describe them. |
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Definition
| Respond to chemicals, like smell, taste, and internal fluids. |
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Term
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Definition
Many unique types of sensations/modalities.
Each sensory neuron carries information for only 1 sensory modaility. |
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Term
True or False:
Touch is a special sense |
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Definition
False.
Special senses include specific sensory structures like:
Smell, Taste, Vision, Hearning and Balance |
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Term
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Definition
Many unique types of sensations/modalities.
Each sensory neuron carries information for only 1 sensory modaility. |
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Term
The General Senses are Sensory Modalities.
They are divided into two divisions.
Name them: |
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Definition
1. Somatic Senses
2. Visceral Senses |
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Term
| Sensory Modalities are divided into two categories. Name them: |
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Definition
1. General Senses
2. Special Senses |
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Term
Tactile sensations are a sub category of cutaneus sensations arising from the skin.
Describe the characteristics of Tactile Sensation: |
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Definition
It is a General Sense of Sensory Modalities.
it requires physical touch/contact such as pressure, vibration, itch or tickle. |
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