Term
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Definition
-Sensitivity to stimuli that involve the skin (touch)
-Stimuli= Pressure, Vibration, Heating and cooling, tissue damage |
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Term
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Definition
-Perception of the body's own movements
-Stimuli= Stretch receptors in skeletal muscle, used to control movement |
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Term
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Definition
-Sense in the inner organs of the body
-Respond to stretch and sometimes temperature |
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Term
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Definition
| - Touch, temperature, and pain |
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Term
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Definition
| Sensitivity to pressure and vibration |
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Term
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Definition
- 2 thermal receptors
-Warm receptors and cold receptors |
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Term
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Definition
-High threshold mechanoreceptors- respond to intense pressure( striking, stretching, pinching)
-Responds ti extremes in heat, acids and capsaicin
-Sensitive to ATP |
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Term
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Definition
-Ruffini corpuscles
-Pacinian corpuscles
-Meissner's corpuscles
-Merkel's Disks |
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Term
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Definition
| - Respond to indentation of the skin |
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Term
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Definition
| - Detect mechanical stimulation and rapid vibrations |
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Term
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Definition
| -Detect low frequency vibrations |
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Term
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Definition
| Respond to indentation of the skin |
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Term
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Definition
-Axons from somatosensory receptors enter the CNS via spinal nerves
-Enter and ascend in the spinal cord in the dorsal columns to nuclei in the medulla
-Axons cross and ascend through the medial lemniscus to the ventral posterior nucleus (VPN) of the thalamus
-VPN projects to the primary somatosensory cortex |
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Term
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Definition
-Muscles connected to bones at each end
-Flexion: movement that tends to bend joints
-Extension: movement that tends to straighten joints |
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Term
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Definition
-Responsible for muscle contraction
-innervated by alpha motor neurons
-Single alpha motor neuron can innervate several muscle fibers |
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Term
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Definition
-Specialized sensory organs
-Arranged in parallel to extrafusal muscle fibers in order to detect muscle length
-Gamma motor neuron contracts the intrafusal muscle fiber ( modifies the sensitivity of the fibers ending to stretch) |
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Term
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Definition
| -Alpha motor neuron, axon, and the associated extrafusal muscle fibers |
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