Sensory Fibers of The A Group
A alpha fibers (Ia fiber or Ib fibers)
- Characteristics:
- High conduction velocity
- Ia fibers are related to muscle spindle primary endings (muscle sense)
- Ib fibers are related to golgi tendon organs (muscle sense)
A beta fibers (II fibers)
- II fibers carry sensory information related to muscle spindle secondary endings, touch, and kinesthesia.
A delta fibers (III fibers)
- III fibers carry sensory information related to pain, temperature, crude touch, and pressure.
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