Biology
Grade-8
Easy
Question
What are free nerve endings?
- The dendrites are specialized
- The dendrites are simple
- The dendrites are encapsulated
- They are sense organs
Hint:
Nociceptors, Thermoreceptors, and some Mechanoreceptors have free nerve endings.
The correct answer is: The dendrites are simple
- Free nerve ending (FNE) is the terminal receptor structure of sensory C-fibers or Aδ fibers.
- FNEs are found in all connective tissues, including the epidermis and dermis of hirsute and glabrous skin.
- Afferent fibers are myelinated or nonmyelinated but are always of small diameter and low conduction velocity. The terminal arborizations of myelinated afferent axons are nonmyelinated and devoid of Schwann cell investment.
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