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18 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Stimuli
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Respond to changes in environment
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PNS
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the portion of nervous system outside CNS consisting of Nerves and Ganglia and sensory receptors and motor endings
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PNS Divides
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Somatic (afferent) Division and
Motor (efferent) Division |
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Motor Division (2 parts)
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Somatic nervous system and Autonomic nervous system
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Autonomic Nervous System
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Sympathetic and Parasympathetic
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5 Receptors
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Mechanoreceptors, Thermoreceptors, Photoreceptors, Chemoreceptors, Nociceptors
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Nocioreceptors
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dangerous stimuli
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Classifaction by location
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Extroceptors, Interoceptors, Propioceptors
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Exteroceptors
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sensitive to stimuli arising outside the body
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touch, pain, temperature, pressure in skin, and special receptors (vision, hearing, equilibrium)
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Interoceptors(visceroceptors)
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Stimuli within the body visceral and blood vessels
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(stretch, chemicals, temperatrue)
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proprioceptors
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advise on body movement
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sensory organs categories (2)
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simple and complex (sense organs with special senses)
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Merkel (disk) Cells
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Light touch receptors
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hair follice receptors
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light touch
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Encaspulated
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Meissners corpuscles, Pacnian corpusles, Ruffini
(all are mechanoreceptors) |
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Meissners corpuscles
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(spiral wrapped in swann cell and thin connective tissue(egg shape)
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Found in sensitive hairless areas.(nipples fingers base of feet)
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Pacinian corpuscles
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(lamellated) 3mm wide deep in subcutaneous tissue and for vibrations
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Ruffini Endings
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Deep in dermis, subcutaneous for monitoring deep continuous pressure
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