What is Pain fibers are which type and explain in detail?
The nociceptors or nerve fibers that are capable of detecting and carrying various forms of pain can be broadly classified into two major types: A-delta and C-fibers.A-delta fibers are lightly myelinated axons and conduct action potential rapidly. In other words, it carries 'fast' type of pain. For example, a sudden, sharp, prick on your body sends a high-speed pain message to your brain to avoid it. These nerve fibers have medium to large-diameter cell bodies. On the other hand, C-fibers mediate 'lingering&; type of pain such as burning or aching. The C-fibers have unmyelinated axons, small-diameter cell bodies and conduct slow action potential.Ref: Ganong&;s review of medical physiology, 23rd edition, page no:89