Chapter 16: Sensory, Motor, Integration Flashcards
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conscious or subconscious awareness of changes in the external or internal environment
Sensation
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conscious awareness and interpretation of sesations primarily a function of the cerebral cortex
Perception
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specialized cell or the dendrites of a sensory neuron
Receptor/Sense organ
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stimulus = external environment (hearing, vision, smell, taste, touch, pressure, vibration, temperature, and pain) at or near external surface of the body
Exteroceptor
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stimulus = not consciously perceived; pain or pressure blood vessels, visceral organs, muscles, and nervous system
Interoceptor/Visceroceptor
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stimulus = body position, muscle length, and tension muscles, tendons, joints and the inner ear
Proprioceptor
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stimulus = touch, pressure, vibrations, stretch skin, ears, muscles, joints
Mechanoreceptor
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stimulus = change in temperature skin, hypothalamus
Thermoreceptor
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stimulus = damage to tissue numerous locations in body “pain” slowly adapting receptor
Nociceptor
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stimulus = light only in eyes
Photoreceptor
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stimulus = chemicals nose, tongue, hypothalamus, stomach
Chemoreceptor
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somatic sensations that arise from stimulating the skin surface
cutaneous sensations
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touch, pressure, vibration, itch, tickle
tactile sensations
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stimulation of tactile receptors in the skin or subcutaneous layer
touch
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rapidly adapting touch receptors found in hairy skin consist of free nerve endings wrapped around hair follicles
hair root plexuses
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sustained sensation that is felt over a larger area than touch occurs with deformation of deeper tissues
pressure sensations
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- slowly adapting tacticle (touch) receptor
- sensation: stretching of skin
Ruffini corpuscles
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- bare dendrites
- receptors for pain, thermal, tickle, itch, and some touch sensations
free nerve ending
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- slowly adapting tacticle (touch) receptors
- sensations: touch and pressure
tactile discs
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- rapidly adapting tacticle receptors
- sensations: touch, pressure, and slow vibrations
corpuscles of touch
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- rapidly adapting pressure receptor
- sensations: pressure and fast vibrations
lamellated corpuscles
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skin, muscles, joints, tendons, fascia
somatic pain
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skin
superficial somatic pain
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muscles, joints, tendons, fascia
deep somatic pain