Pain: Definition, Types, Pathway & Differences | Easy Biology Notes
🩺 Pain – Definition, Types & Mechanism (Easy Notes) What is Pain? Pain is one of the most common clinical symptoms of a disease. It is an unpleasant and subjective experience that occurs when body tissues are damaged. Pain acts as a protective reflex, helping the body react and remove harmful stimuli. Pain Centre The pain centre is located in the cerebral cortex and hypothalamus of the brain. Pain Receptors Pain is sensed through receptors. Free nerve endings act as pain receptors and are present throughout the body. These receptors respond to three types of stimuli: Mechanical Thermal Chemical Pain Pathway When pain receptors are stimulated, signals are transmitted to the brain’s pain centre, where the sensation of pain is perceived. Classification of Pain Pain can be classified as: Acute pain Chronic pain Based on origin: Skeletomuscular (Inflammatory) pain Smooth muscle (Spasmodic) pain Difference Between Pain Types Spasmodic Pain: Occurs...