Flashcards in Phys agents Pain theories/receptors/Laws Deck (20):
Specific pain is based on specific nerve endings
Specific pain fibers are responsible for pain
They will always transmit the same pain
Pain is caused by the intensity and frequency of a stimulation of a nerve which creates a specific Patten perceived as pain
Gate Control Theory
Nerve fibers converge on T-cells which causes a "gate" system opening certain pathways.
What will send inhibitory signals in the spinal gate theory
How do physical agents activate spinal gate theory
Activates nonnociceptor sensory afferents which will Inuit the T cell from activating the spinal cord
What is peripheral pain modulation
There are opioid receptors located in the peripheral nerve.
Non-thermal Physical gents can be used to stimulate them
What modality would best stimulate the peripheral pain modulation
Short rate TENS (Activates Opiods)
What modality best activates the spinal gate theory
What are muscle spindles
Sensory Neurons that lie parallel to muscle fibers. They will respond to stretching of the muscle
What neuron will the muscle spindle send impulses to
Alpha motor neuron
Type one a
What are Golgi tendon organs
Sensory receptors located in the connective tissue between the muscle and tendon.
What is GTO major function
Protects the muscle from over stretching
Respond to pressure, are slowly adaptive
Sense vibrations in the skin
Are quickly adaptive
Energy absorbed must be sufficient to stimulate the absorbing tissue.
Ex) enough heat to create tissue elongation
If energy is not absorbed superficially it will penetrate deeper tissue.
Ex) 1 Hz will penetrate the deeper tissue bypassing superficial tissue
Maximum absorption happens when the source is placed at right angles to absorbing surface