Lecture title - Why do we feel different types of pain? - Pathways of nociception
3 important questions on Lecture title - Why do we feel different types of pain? - Pathways of nociception
List the pathway of nociception from the sensory receptor to the brain and back. List t he 8 step pathway
To the brain = Nociceptors → dorsal horn → anterolateral system to the thalamus → somatosensory cortex
From the brain = somatosensory cortex → dorsal horn → anterior motor nerve fibers → muscle fibers
From the brain = somatosensory cortex → dorsal horn → anterior motor nerve fibers → muscle fibers
1. What are pathways of nociception?
2. Name the route of painful afferent somatic sensory signals?
3. Name the route responsible for painful pathways for the face?
4. Name the 3 pain associated pathways for the viscera (internal organs)
1. neural routes that transmit pain signals from different parts of your body to your brain.
2. spinothalamic tract
3. trigeminothalamic tract
2. spinothalamic tract
3. trigeminothalamic tract
- Vagal Pathways
- Splanchnic Spinal Fibers
- Dorsal Column Pathway for Visceral Pain
List the 9 step pathway communicating pain, temperature and crude touch called the spinothalamic tract
- Sensory Receptor
- Spinal Nerve
- Dorsal Root Ganglion
- Dorsal Root of Spinal Cord
- Lissauer's Tract (travel up or down vertebrae)
- Synapse in Dorsal Horn Grey Matter & Cross over via Anterior White Commissure
- Ascend via Spinothalamic / Anterolateral Tract
- Ventral Posterolateral (VPL) Nucleus of Thalamus
- Primary Somatosensory Cortex
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