Quiz 1 Flashcards
Pain is an unpleasant _ and_ _ associated with _ or _ tissue damage, or described in terms of such damage.
Pain in an unpleasant SENSORY AND EMOTIONAL EXPERIENCE associated with ACTUAL OR POTENTIAL tissue damage or described in terms of such damage.
How are nociceptive mechanisms classified? (2)
Peripheral and central
Nociceptive neurons are excited by _ _ but does not necessarily correlate to _.
Nociceptive neurons are excited by NOXIOUS STIMULI but does not necessarily correlate to PAIN
What are the 2 associated structures under the central pain mechanism?
Spinal/ brainstem mechanism
Cortical mechanism
_ is noxious stimuli converted to electrical current. _ is communication along nociceptors axons to cell bodies in the DRG of spinal cord.
TRANSDUCTION is noxious stimuli converted to electrical current.
CONDUCTION is communication along nociceptors axons to cell bodies in the DRG of spinal cord.
_ occurs when inflammatory mediator across synapse to dorsal horn.
TRANSMISSION occurs when . . .
Inflammatory mediators and nociception is a _ process.
Is a COMPLEX PROCESS
Substance P, immune cells (natural killer cells and T lymphocytes, WBC’s (neutrophils, mast cells, etc), cytokines, enzymes (cyclooxygenase- COX), and proteins (bradykinins, prostaglandins, etc) are all examples of
All examples of inflammatory neurotransmitters
_ _ is increased responsiveness and reduced threshold of nociceptive neurons in the periphery to the stimulation of their receptive feilds.
PERIPHERAL SENSTIZATION
_ _ is increased responsiveness of nociceptive neurons in the CNS to their normal or subthreshold afferent input
CENTRAL SENSITIZATION
What is the term used for normal peripheral pain?
Primary hyperalgesia
Primary hyperalgesia is a state of increased intensity of pain sensation induced by either a _ or _ _ _ of peripheral tissue.
Is a state of increased intensity of pain sensation induced by either a NOXIOUS or ORDINARILY NON-NOXIOUS STIMULATION of peripheral tissue.
What is the term for chronic pain due to central sensitization?
ALLYODYNIA
Allodynia is pain that is not induced by _ _ _, but is induced by _ _ _ or _ fibers.
Is not induced by NOCICEPTIVE NERV FIBERS but is induced by LOW-THRESHOLD ALPHABETA OR C fibers.
Why is it important to know which mechanism is at play when it comes to pain?
So you can determine if meds are appropriate to presenting symptoms.
_ _ and _ in the _ __ are the main target for nociceptive primary afferents
LAMINAE I AND II in the SPINAL DORSAL HORN are the main target for nociceptive primary afferents
Laminae I-IV in the spinal dorsal horn are all _ _ _
Laminae I-IV in the spinal dorsal horn are all SENSORY PRIMARY AFFERENTS
_ _ within Laminae _ and _ account for most nociceptive input to the brain.
PROJECTION NEURONS with Laminae I and IV account for most nociceptive input to the brain.
1/3 of neurons use _ or _ as neurotransmitters to INHIBIT other spinal neurons like projection neurons
1/3 of neurons use GABA OR GLYCINE as neurotransmitters . . .