PAIN AND NOCICEPTION
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WHAT IS A NOCICEPTROR
THE SMALLEST MYELINATED, OR UNMYELINATED PROMARY AFFERNT NERVE FIBRES THAT ARE DANGER RECEPTORS
WHAT IS THE THREE STEPS OF TEH SPINOTHALAMIC PATHWAY OF TEH ANTEROLATERAL SYSTEM
• SPINOTHALAMIC • SPINORETICULAR • SPINOMESENCEPHALIC
WHAT IS ALLODYNIA
PAIN DUE TO A STIMULUS THAT DOES NTO NORMALLY PROVOKE PAIN
WHAT IS HYPERALGESIA
EXCESSIVE PAIN FROM A STIMULUS THAT DOES NORMAL PROVOKE A NORMAL AMOUNT OF PAIN
WHAT IS ANALGESIA
ABSENCE OF PAIN IN RESPONSE TO A STIMULATION WHICH WOULD NORMALLY BE PAINFUL
WHERE CAN NOCICEPTORS BE FOUND
EXTERNALLY - CUTANEOUS INTERNALLY - MUSCLES, JOINTCAPSULES, PERIOSTEUM, AND JOINTS. AND VISCERA
WHERE ARE THE CELL BODIES OF NOCICEPTORS FOUND
DORSAL ROOT GANGLION
WHAT IS THE PATHWAY OF THE ANTEROLATERAL SYSTEM
1/ TRANSDUCTION 2. TRANSMISSION 3. MODULATION 4. PERCEPTION
WHAT IS INVOLVED IN TRANSDUCTION
NOXIOUS STIMULI ARE CONVERTED INTO ELECTROPHYSIOLOGICAL ACTIVITY
WHAT IS INVOLVED IN TRANSMISSION
THE INFO IS RELAYED VIA THE SPINAL CORD TO THE BRAIN STEM AND THALAMUS
WHAT IS MODULATION
INVOLVES BOTH EXITORY AND INHIBITORY MECHANISMS. THE PROCESS BY WHICH TTHE BODY ALTERS A PAIN SIGNAL AS IT IS TRANSMITTED ALONG THE NEUROLOGICAL PATHWAY
WHAT IS PERCEPTION
THE BRAIN FINALLY REGISTERS THE MODULATED SENSATION OF PAIN, AND THE CONNECITONS BETWEEN THE THALAMUS AND HIGHER CORTICAL CENTRES CONTROL PERCEPTION AND INTEGRATE THE DEEMED APPROPRIATE RESPONSE