Template:Peripheral Nerve Fibres: Difference between revisions
From WikiMSK
mNo edit summary |
No edit summary |
||
| (5 intermediate revisions by the same user not shown) | |||
| Line 2: | Line 2: | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! | ! Nerve Fibre !! Myelin !! Diameter (µm) !! Conduction velocity (m/s) !! General Function | ||
|- | |- | ||
| Aα || Yes || 13-20 || 80-120 || muscle spindle primary endings, golgi tendon organs, | | Aα (I) || Yes || 13-20 || 80-120 || Proprioception: muscle spindle primary endings (Ia), golgi tendon organs (Ib), and alpha motor neurons | ||
|- | |- | ||
| Aβ || Yes || 6-12 || | | Aβ (II) || Yes || 6-12 || 35-75 || Discriminative sensitivity to mechanical stimuli (touch, vibration), proprioception, pain modulation (block nociceptive information, [[Allodynia and Alloknesis|allodynia]] in sensitisation) | ||
|- | |- | ||
| Aγ || Yes || 4-8 || 15-40 || Touch, pressure | | Aγ || Yes || 4-8 || 15-40 || Touch, pressure, and gamma motor neurons. | ||
|- | |- | ||
| Aδ || Thin || 1-5 || | | Aδ (III) || Thin || 1-5 || 5-30 || "rapid" pain, crude touch, pressure, temperature. AMH type I for rapid mechanical pain (high heat threshold >53C), AMH type II for rapid heat pain (lower heat threshold 43-47C). | ||
|- | |- | ||
| B || No || 1-3 || 3-14 || preganglionic autonomic | | B || No || 1-3 || 3-14 || preganglionic autonomic | ||
|- | |- | ||
| C || No || 0. | | C (IV) || No || 0.2-1.5 || 0.5-2.0 || "second" pain, mechanical, chemical, thermal, pruritis, and postganglionic autonomic. polymodal | ||
|} | |} | ||
<noinclude> | <noinclude> | ||
[[Category:Table Templates]] | [[Category:Table Templates]] | ||
</noinclude> | </noinclude> | ||
Latest revision as of 19:44, 3 September 2021
- Characteristics of peripheral nerve fibres
| Nerve Fibre | Myelin | Diameter (µm) | Conduction velocity (m/s) | General Function |
|---|---|---|---|---|
| Aα (I) | Yes | 13-20 | 80-120 | Proprioception: muscle spindle primary endings (Ia), golgi tendon organs (Ib), and alpha motor neurons |
| Aβ (II) | Yes | 6-12 | 35-75 | Discriminative sensitivity to mechanical stimuli (touch, vibration), proprioception, pain modulation (block nociceptive information, allodynia in sensitisation) |
| Aγ | Yes | 4-8 | 15-40 | Touch, pressure, and gamma motor neurons. |
| Aδ (III) | Thin | 1-5 | 5-30 | "rapid" pain, crude touch, pressure, temperature. AMH type I for rapid mechanical pain (high heat threshold >53C), AMH type II for rapid heat pain (lower heat threshold 43-47C). |
| B | No | 1-3 | 3-14 | preganglionic autonomic |
| C (IV) | No | 0.2-1.5 | 0.5-2.0 | "second" pain, mechanical, chemical, thermal, pruritis, and postganglionic autonomic. polymodal |
