Group B fibers are present in_____________?
Correct answer: C. Autoonomic preganglionic fibers
- A. Intrafusal fibers of the muscle spindle
- B. Golgi tendon apparatus
- C. Autoonomic preganglionic fibers
- D. Spinothalamic tracts
Explanation
Group B fibres are small, myelinated fibres that include autonomic preganglionic axons. Spinothalamic pain fibres are mainly A-delta and C fibres, while muscle spindle and Golgi tendon afferents are generally larger Group I or II fibres.
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