Exam (elaborations)
PMCOL 343- Pain I Study Set Exam
- Course
- Institution
PMCOL 343- Pain I Study Set Exam ...
[Show more]
Content preview
PMCOL 343- Pain I StudySet Exam
What type of perception do A-beta fibres play a crucial role in - Answer Perception of
light touch; these fibres are highly sensitive to light touch and convey information about
tactile sensations
Describe the extent of myelination of A-beta fibres - Answer Heavily myelinated
What type of perception do A-delta fibres play a crucial role in - Answer Perception of
signals related to sharp and acute pain
Describe the extent of myelination of A-delta fibres - Answer Myelinated, but less than
A-beta fibres
What type of perception do C fibres play a crucial role in - Answer Perception of dull,
persistent pain signals (heat and chemical stimuli)
Describe the extent of myelination of C fibres - Answer Unmyelinated
Rank A-beta, A-delta, and C fibres from slowest impulse conduction to fastest impulse
conduction - Answer C fibres (slowest), A-delta fibres, A-beta fibres (fastest)
Where are the cell bodies for A-beta, A-delta, and C fibres located - Answer In the dorsal
root ganglion
These sensory neurons have long projections that extend into what two direction -
Answer One projection extending to peripheral tissues to detect sensory stimuli, and the
other extending into the spinal cord
When a painful stimulus is present, what type of receptor in the peripheral tissue is
activated, and what happens when these are activated - Answer Nociceptors; when
activated they generate action potentials
The action potentials caused by nociceptor activation is then travelled along through
pain fibres to what location - Answer The dorsal root ganglion
The sensory information from the dorsal root ganglion enters the spinal cord through
what type of neurons - Answer Dorsal root projecting neurons
What happens once the pain signal is in the spinal cord - Answer It crosses over to the
other side, and is then transmitted to higher brain centres
, What happens to the pain signal once it is in these higher brain centres - Answer Pain
signal is processed and interpreted, leading to the conscious perception of pain
What is the definition of nociception - Answer The neural encoding of a noxious signal
What is the definition of pain - Answer The unpleasant experience associated with tissue
damage; more psychological (how that nociception affects you)
What is the definition of an analgesic - Answer Selectively blocks the sensation of pain,
without blocking other modalities
What is the definition of a local anesthetic - Answer Blocks nerve conduction and all
sensation in a localized area
What is the definition of a general anesthetic - Answer Induces a reversible loss of
consciousness
General anesthetics do not always cause analgesia; describe what this means - Answer
Provides for intraoperative analgesia, but additional measures are usually required for
postoperative analgesia
What is the definition of hyperalgesia - Answer The enhanced response to a painful
stimuli
What is the definition of allodynia - Answer The generation of a painful response by what
is considered an innocuous stimulus (generation of pain from a non-painful stimuli)
Describe what the term 'good pain' refers to - Answer The pain response is important for
our existence, as it serves a protective function and biological purpose (ie. protection
from tissue damage)
Acute pain is generally carried by A-delta fibres; what fibres would carry the information
if the injury led to more persistent pain - Answer Would be carried by C-fibres
What is the most common treatment for mild, musculoskeletal pain - Answer Typically
with non-steroidal anti-inflammatory drugs (like aspirin or ibuprofen)
Persistent pain is caused mainly by the release of what three inflammatory mediators -
Answer Bradykinin, histamine acid metabolites, and prostaglandins
What does the term 'deep pain' refer to - Answer Pain that originates from structures
located deeper within the body, as opposed to pain from superficial tissues
What is the most common treatment for deep pain - Answer With the use of major
analgesics, such as morphine (an opioid)
Deep pain is still considered 'good pain'; describe why - Answer Deep pain still plays a
protective role, allows for the healing process to progress and prompts the individual to
take actions to avoid further damage
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Zayla. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79373 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now