Pain Worksheet Flashcards
Explain the finding of the study investigating the sex differences in pain
- No significant sex differences at low temp
- Females reported higher pain at same high heat as males
A-beta fibers
- Information carried
- myelinated?
- Diameter (Smallest to largest)
- Conduction (Slowest to fastest)
- Touch
- yes
- largest
- fastest
A-delta fibers
- Information carried
- myelinated?
- Diameter (Smallest to largest)
- Conduction (Slowest to fastest)
- Pain
- yes
- moderate
- moderate
C fibers
- Information carried
- myelinated?
- Diameter (Smallest to largest)
- Conduction (Slowest to fastest)
- Pain
- no
- smallest
- slowest
Meissner Corpuscle
- Stimulus response
- Fiber type
- Adaptation Rate
- Activation Threshold
- Touch (dynamic deformation)
- A-beta
- Rapid
- Lower
Pacinian Corpuscle
- Stimulus response
- Fiber type
- Adaptation Rate
- Activation Threshold
- Touch (Vibration)
- A-beta
- Rapid
- Lower
Merkle’s disk
- Stimulus response
- Fiber type
- Adaptation Rate
- Activation Threshold
- Touch (indentation depth)
- A-beta
- moderate
- Lower
Ruffini Corpuscle
- Stimulus response
- Fiber type
- Adaptation Rate
- Activation Threshold
- touch (stretch)
- A-beta
- moderate
- lower
Free Nerve Ending
- Stimulus response
- Fiber type
- Adaptation Rate
- Activation Threshold
- Pain
- A-Delta and C
- Slow
- Higher
What receptors are activated when you burn your hand in boiling water
- Free nerve endings
What receptors are activated when you get kicked in the shin
- Free Nerve endings
- merkle’s Disk
What receptors are activated when giving a vigorous handshake
- Free Nerve Endings
- Meissner Corpuscle
Spinothalamic Tract
- Originates in the nociceptor
- Cells extend from A-delta and C-fibers and synapse in the dorsal horn with the second order neurons
- Second-order neurons ascend to the thalamus on the contralateral side
- Second-order neurons synapse with third-order neurons in the thalamus
- third-order neurons terminate in the somatosensory cortex
Lemniscal Tract
- Originates with mechanoreceptors
- Cells extend to form a-beta fibers that synapse in the medulla oblongata with second order neurons
- Second-order neurons ascend to thalamus on the contralateral side
- Second-order neurons synapse in the thalamus with third-order neurons that terminate in the somatosensory cortex
Gait Control Theory
- Applying though to the sight of injury activates the A-beta neuron
- Which activates the interneuron
- The interneuron inhibits the second-order neuron of the spinothalamic tract closing the gait to pain
What aspect of pain perception does acetaminophen impact?
Emotional