Dental Neuroscience 2

Mechanoreceptor functions:

Mechanoreceptor fibers

True or False: Thermal receptors include both sensation and pain.

Thermal receptor heat ranges:

Miller's Law of Specific Nerve Energies

A beta fibers include Encapsulated endings and endings with accessory structures like:

A-delta fibers innervate:

C fibers innervate:

Noxious sensations involve

Structure of skin:

Endings around hairs located ________. Receptor ending is: _________. Adaptation is _______. Function is _______.

Merkel endings are located in __________. There are ____ Merkel cells for every 1 nerve terminal. Receptor endings are found in cells with ________. _________ adapting. Functions are _________.

Free nerve endings are located in ________. Receptor endings for unmylinated nerves end in ________ fibers. Also endings in ____ fibers. _______ fibers are rapidly adapting. _____ fibers are slowly adapting. Functions are: _________.

Receptive Field (RF)

A beta fibers

A delta fibers:

C fibers

Central terminals of afferent fibers pass to the ___________ part of the spinal cord through ______ columns in the brainstem.

Fasciculus gracilis

Fasciculus cuneatus

At each successive spinal level, fibers entering the posterior column add on _______ to those already present.

Nucleus gracilis and nucleus cuneatus are __________. Fasciculus gracilis and fasciculus cuneatus are __________.

Third order neurons go from _____ to __________.

Information from head goes to:

Information from body goes to:

VPL is called relay nucleus because it gets input from ____ and _______. It also sends output to the cerebral cortex.

VPM is important for __________.

3rd order neurons in VPL raise their axons to:

Input to _______ comes from S1 and may play a role in _________.

In somatotropic mapping, information from face takes a significant portion of the _______ part of the somatosensory cortex.

In somatotropic mapping, the body input can be found in the more _______ aspect of the somatosensory cortex.

Objective signs of nociception include:

Analgesia

Anasthesia

A and C fibers are responsive to:

Transmitters of nociception are:

As you increase the stimulus temperature, you ______ the frequency of action potentials.

Hyperalgesia function

Efferent function of nociceptors:

Low threshold input from:

Wide dynamic from:

High threshold from:

Lateral STT

Medial STT

STT neurons can become sensitized after injury or inflammation. This is the physiological correlate of:

Spinoreticular tract function:

Spinohypothalamic tract function:

Spinomesencephalic tract function:

Descening modulation of pain: Endogenous - PAG--> DRM --> Spinal cord

Opiates ____ the release of _______ from nociceptor, which decreases excitability of the STT.

In demo, 1st sense lost was:
2nd sense lost was:
3rd rxn was:

Dimensinos of the pain experience

What causes cold induced burning pain during blockade of A-fiber (myelinated) conduction?

Which type of receptor is not found on the face?

Specialized tissues of the face have what type of receptor endings?

How many neurons per ganglion in TRG vs DRG

What is the somatotropic organization of trigeminal?

Fiber composition of TG vs Spinal cord

Differences of TG from SC and CNS

Vp involved in

Vp (Principal) consists of _____ fibers. Functions:________.

Vo - Subnucleus oralis for:

Vi - subnucleus interpolaris

Vc - subnucelus caudalis

Stomatotropy

Nearly all C fibers terminate in

Touch pathway is mostly __ receptors (2)

Extraoral thermal and pain pathways:

What pathway does extraoral pain follow?

Intraoral thermal and pain pathways:

What pathways are important for passing of pain inside the mouth?

Intraoral pain pathway is a redundant system - True or False

What % of the primary sensory cortex is taken up by trigeminal innervated nerves?

What is the most important pathway of pain outside the mouth?

Skeletal muscle reflexes (2)

Autonomic reflexes controlled by trigeminal (3)

Jaw Muscle Reflexes

Cornea (Blinking) Reflexes

Major points of muscle reflexes:

Trigeminal - Parasympathetic

Where do TG sympathetics go?

Trigeminal - Sympathetic

Classification of Craniofacial Pain

Inside and outside of tooth innervated by sympathetics - True or False

TRG innervates (in mouth)

Vmes innervates (in mouth)

Sympathetic postganglionic fibers innervate (in mouth)

TRG neurons detect:

Vmes neurons in mouth detect:

Interior tooth innervation

Interior tooth innervation -
A delta fibers from TRG supply:
C fibers from TRG supply:

What is movement within tubules sufficient for?

What is responsible for transmitting pain?

How is oral persistent pain transmitted?

Mechanisms for acute dental pain

What is the caveat to signaling?

Inputs from ____ distribute throughout entire length of trigeminal nucleus

Areas that receive input from teeth receive input from other oral tissues. This is a reason for what?

Peripheral features that limit tooth pain localization:

CNS featurse that limit tooth pain localization:

Normal disc position in the intermediate zone vs. persistent disc displacement

Diagnostic Criteria for Myofacial Pain

Normal TMJ Findings

Criteria for Myofacial Pain with Referral

Where does masseter muscle pain refer to?

How does masseter referred pain to teeth feel?

Combining diagnostic criteria for myofascial pain and myofascial pain with referral increases S/S

Diagnostic criteria for Arthralgia/arthritis

Headache attributed to TMD - Diagnostic Criteria

Target for sensitivity and specificity is:

Diagnostic Criteria for TMJ disc displacement with reduction

Diagnostic criteria for disc displacement with reduction with intermittent limited opening

Both types of disc displacement diagnoses need a ____ for better sensitivity

Diagnostic Criteria for Disc Displacement without reduction (closed lock)

Disc displacement without reduction without limited opening

Degenerative Joint Disease

What is basic definition of Degenerative Joint Disease

TMJ Dislocation

Trigeminal Neuralgia

Deafferentiation Pain