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117 Cards in this Set

  • Front
  • Back
Lymphocytes include:
Include T and B-lymphocytes

Also NK cells
Lymphocytes in Chronic inflammation:
Arrive approximately 5 days post injury
Prominent in chronic inflammation
Essential 4 normal tissue repair
Enhance macrophage function
Lymphocytes can be associated with:
repetitive microtrauma, autoimmune responses, chronic conditions

**Does not have the cardinal signs of inflammation
Histamine:
vasodilation, exudate formation, itching, capillary premablity
Kinin (Bradykinin Etc.)
vasodilate, form pain, exudate formation
Prostaglandin:
sensitize blood vessels to inflammatory mediators and nocirecptors
Complement:
Kills cell lyosis, non-specific, and specific , enhances defense
The Four Components of Repair Phase are:
1. Granulation
2. Fibroplasia
3. Angiogenesis
4. Re-epithelialization
Granulation present indicates:
Granulation present indicates:
"normal" healing

**Named for its cobbled appearance**
Fibroplasia are:
Fibroblasts drawn to wound from dermis by cytokines

Fibroblasts then change into myofibroblasts

As new blood vessels are produced myofibroblast production slows
Angiogenesis occurs by:
1. Sprouting of new pathway
2. Anastomosis with new and existing vascular paths

A response to:
Hypoxic environment
Free edge effect
Cytokines: platelets etc.
Re-epithlization is important for:
providing barriers to infection and to decrease fluid loss

**Concurrent with the formation of granulation tissue
Fibroplasia have:
Collagen (Type III) present in wound as soon as 2 days!!
Ground substance is:
Gelled material that forms the extracellular matrix &
Facilitates fibroblast production & absorbs large amounts of water

**ADDS FLEXIBILITY**
Angiogenesis is a response to:
1. Hypoxic environment
2. Free edge effect (wound is present)
3. Cytokines: platelets etc.
Cellular Production is:
Contact inhibition is mediated by cytokines known as chalones

**NEED TO HAVE FREE EDGE EFFECT TO KNOW IT NEEDS TO OCCUR**
Migration is the:
Process of cell movement from periphery to center &
occurs over granulation tissue
3 stages of remodeling phase is:
1. Collagen conversion
2. Wound contraction
3. Scar formation
Remodeling Phase is the:
Balance between tissue synthesis & degradation

**want both to occur
Key Point to Collagen Conversion is that:
Oxygen is necessary for collagen cross-linking to occur
Wound Contraction is:
Process that closes wound after tissue loss
*Myofibroblasts connect with fibronectin
which then connect with collagen fibers

Actin in the cytoplasm draws the collagen closer together
Wound Contraction results in:
faster healing since it decreases the amount of tissue that must be repaired & remodeled

Contraction decreases the size of full-thickness wounds by 40% & is associated with concurrent scarring
Scar Formation has four stages, what are they?
Stage 1-4
Stage 1 of scar formation is:
2-4 days post injury
Type III collagen
Prone to tear
Stage 2 of scar formation is:
5-21 days post injury
Type III converted to type I collagen
Less likely to tear
Most receptive to intervention
Stage 3 of scar formation is:
21-60 days post injury
More fibrous and strong
Decreased response to intervention
Stage 4 of scar formation is:
60 days on post injury
Scar maturation
Final appearance
Unresponsive to treatment, surgical intervention considered
What kind of scar is this?
What kind of scar is this?
Hypertrophic scar
What kind of scar is this?
What kind of scar is this?
Keloid Scar
Keloid scars are:
Typically extend outside of wound bed

Seen typically in Asian and African populations
Hypertrophic scars:
Do not extend outside of wound bed
Type III is gradually lysed by collagenase and converted to Type I in what length of time:
300 days

**The stimulus for this conversion is stress and strain
Ex. Tension, compression
In collagen conversion, Type III converted to:
Type I
Type III is synthesized during the first:
48-72 hours
Collagen Conversion tissue breaks strength to pre wound values by:
20% by third week prior to being damaged

70-80% in several months down the road
Pain is defined as:
Unpleasant sensation
Unpleasant emotional response
Actual or potential tissue damage
Warning signal so appropriate response evoked
What is pain perception?
Establish cognitive value & response priority

Based off of experience & involves sensory, emotional, motor, and cultural components
Pain usually helps with:
tissue healing by preventing us from further aggravating our pathological and painful conditions.
What are the two sources of pain?
1. Peripheral Nociceptive
2. Peripheral Neurogenic
Peripheral Nociceptive pain is:
Pain transmitted via A delta and C fibers to dorsal horn & to brain

**Its a sharp, acute pain that is localized to that injured tissue
Peripheral Neurogenic Pain is:
Creates abnormal impulse generator sites (AIGS)

Nerve can be stripped of myelin

**Its an Injury to the nervous system
Central Pain source creates:
abnormal pain states
Allodynia is:
pain provoked by stimulus that doesn’t normally cause pain

Ex. Someone brushing up against you
Hyperalgesia is:
heightened response to a painful stimulus, should hurt but "reaction" is GREATER than you would expect
Chronic Pain is:
1. Pain that last longer than 6 months
2. People sleep less (can’t sleep) & truly depressed
3. It never truly goes away, too much damage was done
4. Pain can “go away” but comes back

**Physical therapy can helpmanage pain & symptoms
Neuroanatomy
GET FROM MELISSA DONT HAVE IN NOTES!! :(
What are the 3 Afferent Types?
1. Interoceptors
2. Exteroceptors
3. Proprioceptors
Interoceptors are:
Found within the system
Monitor blood pressure internally
Blood o2 levels
Exteroceptors are:
anything that responds outside the body

Ex. Eyes, Ears, Mouth, Etc.
Proprioceptors can be:
a mixture of both Interoceptors & Exteroceptors
A Delta Fibers are:
1.Primarily mechanical nociceptors which are Sensitive to pressures intense enough to cause damage
2. Sensation is sharp, pricking & last 4 a short duration
3. Localized & tolerated well
C Fibers make up:
1.Majority of nociceptors
2.Sensitive to very intense mechanical & temperature

**Some are Specific to chemical (acid, irritants, inflammatory mediators) or mechanical pressure only
Non-Nociceptive Afferents are mechanoreceptors which include:
1. Meissner’s corpuscles
2. Pacinian corpuscles
3. Merkel’s discs
4. Ruffini ending

**Should not cause pain!
Meissner's Corpuscles are:
very sensitive to light touch

**Found most places on the body
Pacinian Corpuscles are:
found to be more adapt to changes in pressure & vibration

**Juries still out if research can tell the difference between smooth and rough
Merkel discs tend to:
pressure and texture

Ex. Smooth and Rough
Ruffini Endings have:
1. No adaptation in general (Alot Deeper)
2. SUSTAINED PRESSURE
3. Deals with mechanical deformation of joints
*Can act as thermoreceptors (DEEP BURN,not good)
Proprioceptors in Non-Nociceptive Afferents exist in:
Joint capsules, Muscles & Tendons

Ex. Ruffini endings, Muscle spindles & Golgi tendon organs
Thermoreceptors in Non-Nociceptive Afferents sense:
Change in temperature in the skin, Joint capsules and Ligaments

Ex. Krause’s end bulb & Ruffini
Krause's End Bulb is:
more adapt to cold temperature than hot temperature
Thermal Nociceptors deal with:
1. Both A delta and C fibers
2. Some are sensitive to changes that barely vary from the norm (depending the severity of the burn)
3. Others require extreme temps to fire
Some A Delta and C Fibers respond to __________, in the interoceptors category:
1. Molecules of local metabolism
2. Mast cell activation
3. Hormonal activity
Homeostatic Receptors have:
Low threshold A delta fibers & can send signals of weak mechanical stimuli

**It Evoke feelings of sensory touch &Emotional response comes into play (Ex. Pleasure Memory)
Chemical Nociception is:
1. Tissue trauma causes a release of multiple chemicals from the damaged cells
2. These elicit a response from nociceptors to release various neuropeptides
3. Then Enhances the sensation of pain
Name the Different Levels of Dermatones:
???? GET FROM LAB PAPERS!!!
???? GET FROM LAB PAPERS!!!
Parallel Ascending Pathways of Pain goes from:
From spinal cord to higher centers & have mult. pathways.
The most important pathway of the Parallel Ascending Pathways of Pain is:
**Spinothalamic Tract**

Other Tracts:
Spinomesencephalic , Spinoparabrachial, Spinoreticular, Spinohyphothalamic-limbic
All the Parallel Ascending Pathways of Pain make up what system?
Anterolateral System
Spinothalamic Tract consists of:
1. Discrimitive pain
2. Temperature
3. Crude touch
4. Pressure


**STOPPED HERE FOR QUIZ THURSDAY!!!**
Spinomesencephalis Tract consists of:
1. Pain modulation
2. Sensorimotor integration of pain
3. Motor reflex to pain
Spinoparabrachial Tract consists of:
the affective component of pain
Spinoreticular Tract consists of:
1. Modulation of pain
2. Motivational, emotional, unpleasant component of pain
Spinohypothalamic-Limbic Tract consists of:
Autonomic adjustments to pain
Anterolateral Systems "Take Home" message is that is has:
1. Multiple ascending pathways
2. Ipsilateral, contralateral, bilateral
3. Redundant system
Names the Different States of pain:
1. Acute Pain
2. Referred Pain
3. Persistent Pain
Acute Pain is:
Sharp
Localized
Rapid onset
Short duration (usually)
Warning of tissue damage (actual or potential)
Referred Pain is:
Pain at a site remote from the source of pathology & occurs due to convergence

Brain unable to decipher or determine where pain is coming from
Persistent Pain is:
Pain that is recurrent or episodic

May accompany a re-injury or associated chronic condition
You can assess pain by:
1. Numerical
2. Verbal rating scale
3. Visual analog scale
Assessment Scales should include:
Severity
Location
Quality
Observation of non verbal cues
Mode, duration of onset
Provocating and relieving factors
Numerical Pain Scale Is:
Give pt 0 to 10
Qualify numbers
What is zero, what is ten
Verbal Rating Scale is:
No pain, mild, moderate, etc.
Visual Analog Scale is:
Number line, or Faces for Kids!
Abnormal Pain can be:
1. Allodynia
2. Hyperalgesia
3. Neuropathic
4. Chronic Pain
C Fibers temperatures ranges are from:
< 59 deg F > 123 deg F
How large are A Delta and C Fibers?
Aδ: Diameter = 1-5 µm; velocity = 2-30 m/sec

C: Diameter = 0.2-1.5 µm; velocity = no more than 2 m/sec
C Fibers are:
1. Unmylinated & free nerve endings (STRONGER intensity with the stimuli)
2. Stronger Intensity, slow deeper pain &unspecificed area
3. Associated with Chronic Pain
4. Are second to A delta fibers
5. Kick in after a “MONTH”
A Delta is:
1. Faster than C Fibers
2. Very Fast Onset of Action
3. Mylinated
4. Tolerated Pretty Well

Ex. Touching a Hot Stove
Dorsal Horn (Dorsal Root Ganglion-DRG) afferents enter:
The spine via the dorsal portion of the spinal nerve

Two point discrimination & proprioception enter through the medial portion of the dorsal root

Nociception (Pain) enters the lateral portion of the dorsal root
DRG (Dorsal Root Ganglion) afferent terminates on:
The appropriate laminae! They then ascends one to two spinal levels via Lissauer’s tract

Crosses in anterior white commissure

Goes up the spinothalamic tract
Nociception means:
PAIN!!!
7 to 8 Times more likely to go into chronic pain if _________ gets injured?
Dorsal Root Ganglion (DRG)
DRG (Dorsal Root Ganglion doesn't produce pain for up to:
2 - 3 weeks

**This is where Work Comp patients get a bad wrath
Examples of Sensory Evaluations are:
Touch (light touch, discrimination)
Pain: sharp/dull
Temperature
Vibration
Why Do We Need to Assess Sensation?
1. Determine areas of sensory loss
2. Following nerve damage (either peripheral or CNS)
3. Before using modalities that could potentially cause harm
4. SAFETY
Sensation is:
All sensory neuron cell bodies are in the dorsal root ganglia
Considerable overlapping of one area to another
Superficial or Deep
The Receptors Activated by Touch are:
Free nerve endings (FNE)
Hair follicle receptors
Meisner Corpuscles
Merkel’s Discs
Ruffini Endings  
Krause Endbulbs
Free nerve endings (FNE)
Hair follicle receptors
Meisner Corpuscles
Merkel’s Discs
Ruffini Endings
Krause Endbulbs
Name all the Dermatone Levels:
Name all the Dermatone Levels:
FINISH
When testing Touch on the Sensory Test, you need to:
Use piece cotton or tissue
Ask patient to say “yes” each time they are touched- “I want you to tell me when you feel me touch you”
Eyes closed
Soles and palms need heavier stimulus-hairier areas need less stimulation
Test on known innervated area first
Tonic Stimulation is:
Some sensory receptors respond to tonic activity like Pacinian Corpuscles
Nociceptor is:
Nerve fiber that fires in response to damaging or potentially damaging stimuli
Noxious Stimuli include:
Mechanical
Temperature
Chemical
Electric
When testing Pain in the Sensory Test, you need to:
Use pinprick; unfolded paper clip
Eyes closed
Deliver stimulus in random fashion
Don’t deliver more then 1 stimulus per second
If find decreased sensation, determine boundaries
With Temperature, Warm Fibers are:
Increase firing with increased temperature
Fire for duration of stimulus
Stop firing when warm stimulus removed
Do not respond to mechanical stimulus
With temperature, Cold Fibers are:
Increase firing with decreased
When do pain receptors begin to fire?
Below 20°C and above 45°C
When testing Temperature in Sensory Test, what do you need to do?
Expose area of skin to be tested
Use 2 test tubes one with hot water, one with cold water
Eyes closed
Randomly apply tubes to body part in question
Ask if feels “less hot or less cold” in comparison to normal side
Vibration uses:
Pacinian corpuscles and deep afferent nerves

Rarely affected by lesions of single nerves
Involved with polyneuritis & dorsal column disease
Commonly lose vibration & position sense together
When testing Vibration in the Sensory Test, you need to:
Use tuning fork
Place tuning fork over bony prominence and compare to other side
Two-point Discrimination is:
Involves sensory cortex and sensory projections from thalamus
Measures the smallest separation between 2 points on the skin that is perceived as 2 stimuli
Use compass or 2 point aesthesiometer
When testing Two-Point Discrimination, you need to:
Eyes closed
Apply 2 stimuli to skin-ask if feels 1 or 2 points
Varies depending on body location
EX: 2-3 mm lips, 3-5 mm fingertips, 20-30 mm on dorsum of hands and feet, 4-8 cm on trunk
Proprioceptors are:
Provide information on joint position and muscle tone (Muscle Spindle, Golgi Tendon Organ)

Free Nerve Endings (Pain, Touch)

Pacinian Corpuscle (Deep Pressure)
Stereoaugnosis Testing is:
Place Familiar Object In Hand and Ask to Identify
Tactile Location Testing is:
Touch Patient, where the Pressure is Placed
Barloaugnosis Testing is:
Two Objects - - > One in each hand, different weights of Objects, Ask which object is heavier
Graphesthesia Testing:
Recognizes Letter Or Design Traced On Skin

Ex. Dram "R" on back or any part of body
Texture is:
Telling the Difference between:

Smooth Vs. Rough
Silk Vs. Scrubber Pad