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sensations2010

sensations2010 - Substance P is 11 amino acids long Pain...

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Sensors are named for what they sense best, e.g., if you get socked in the eye you will see stars, but the eye is really a photo receptor. (smell and taste are chemoreceptors) Mechano-includes phono and stretch receptors and even blood-pressure sensors inside of arteries. Chemo= taste, smell, and internal sensors of blood pH, too. The translation of a specific type of energy or chemical concentration, etc., into a nerve impulse is called TRANSDUCTION . Sensations 2010
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The PEPTIDE of PAIN: an unusual neurotransmitter.
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Unformatted text preview: Substance P is 11 amino acids long. Pain nerves are small, unmyelinated, slow-conducting, non-adapting as long as the injury is present. The white association neuron is stimulated, sends its own action potentials to the thalamus (lateral spinothalamic tract) PAIN Nerve endings are bare and respond to damage (ions flow in), and surrounding tissues release bradykinins when damaged. This depolarizes pain nerves, too. Pain perception= NOCICEPTION. See endorphins.doc or endorphins.ppt for details...
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sensations2010 - Substance P is 11 amino acids long Pain...

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