OTD 433 FINAL PAPER SOLUTIONS 2026
QUESTIONS WITH SOLUTIONS GRADED
A+
>> What percent of the population experiences chronic pain?
Answer: 10%
>> This theory proposes a direct, one-to-one link between a painful stimulus and
the resulting pain sensation; it assumes that pain signals travel via a single
dedicated pathway from periphery to a "pain center" in the brain
Answer: Specificity Theory of Pain
>> Pain used to be viewed as an ____________ experience that was directly
linked to tissue injury
Answer: emotional
>> What is the general neural mechanism of pain?
Answer: nociception>transmission>modulation>perception
>> How did world war I observations alter pain theory?
Answer: soldiers with severe injuries often felt little pain
>> What theory "revolutionized" pain theory?
Answer: Gate Control Theory
>> Which spinal tract transmits pain signals?
Answer: lateral spinothalamic tract (LST)
, >> What order of structures processes pain signals once it reaches the brain?
Answer: reticular formation>thalamus>S1 in parietal lobe>limbic
system>hypothalamus
>> How does pain function as a protective response?
- activates protective mechanisms
- promotes rest and protection of injury
- contributes to learning
Answer: - warning signal
>> The sympathetic response to pain is termed the ______________ response
Answer: fight or flight
>> Specialized sensory receptors that detect harmful stimuli are called
Answer: nociceptors
>> Activation of this receptor is what initiates the pain response
Answer: nociceptor
>> Which chemical substances can activate nociceptors?
Answer: histamine, potassium, serotonin, bradykinin, prostaglandins,
substance P
>> What is the purpose of variable activation thresholds in nociceptors?
Answer: allows for nuanced responses, alerting the body to minor or severe
damage
>> What kind of pain do A-delta fibers transmit?
Answer: sharp, well localized pain
>> What kind of pain do C-fibers transmit?
QUESTIONS WITH SOLUTIONS GRADED
A+
>> What percent of the population experiences chronic pain?
Answer: 10%
>> This theory proposes a direct, one-to-one link between a painful stimulus and
the resulting pain sensation; it assumes that pain signals travel via a single
dedicated pathway from periphery to a "pain center" in the brain
Answer: Specificity Theory of Pain
>> Pain used to be viewed as an ____________ experience that was directly
linked to tissue injury
Answer: emotional
>> What is the general neural mechanism of pain?
Answer: nociception>transmission>modulation>perception
>> How did world war I observations alter pain theory?
Answer: soldiers with severe injuries often felt little pain
>> What theory "revolutionized" pain theory?
Answer: Gate Control Theory
>> Which spinal tract transmits pain signals?
Answer: lateral spinothalamic tract (LST)
, >> What order of structures processes pain signals once it reaches the brain?
Answer: reticular formation>thalamus>S1 in parietal lobe>limbic
system>hypothalamus
>> How does pain function as a protective response?
- activates protective mechanisms
- promotes rest and protection of injury
- contributes to learning
Answer: - warning signal
>> The sympathetic response to pain is termed the ______________ response
Answer: fight or flight
>> Specialized sensory receptors that detect harmful stimuli are called
Answer: nociceptors
>> Activation of this receptor is what initiates the pain response
Answer: nociceptor
>> Which chemical substances can activate nociceptors?
Answer: histamine, potassium, serotonin, bradykinin, prostaglandins,
substance P
>> What is the purpose of variable activation thresholds in nociceptors?
Answer: allows for nuanced responses, alerting the body to minor or severe
damage
>> What kind of pain do A-delta fibers transmit?
Answer: sharp, well localized pain
>> What kind of pain do C-fibers transmit?
