Talk:Skeletal muscle
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Skeletal (Striated) Muscle
Do all mammals have the same form of striated muscle fibre? I expect the metabolism is the same but what about other groups? Derek H
All mammals have the basic "fast" and "slow" muscle fiber types, denoted by different isoforms of Myosin: Type I (slow), Type II (Fast). Fast muscle can be subdived into sub-types: IIA, IIB, II C, etc. Different mammals may have different proportions of Fast and Slow muscle fibers in distinc muscles, in comparison to human, for example. Gacggt 14:23, 29 May 2006 (UTC)
Does anyone know if skeletal muscle fibres (i.e. single cells) stretch the whole length between tendons? Thanks. -postglock 09:18, 25 May 2006 (UTC)
This is probably the case, since a single muscle fibre may be thirty centimetres long. --Smajie
- Cheers, thanks. -postglock 01:59, 24 October 2006 (UTC)
[edit] Fascicle
Skeletal Muscle = Fascicle + Blood vessel
Type I (Slow) Muscle: Outside of Fascicle
Type II (Fast) Muscle: Center of Fascicle
--Smajie 06:40, 2 July 2006 (UTC) _____________ Sorry that is not true... a fascicle is just the muscle bundle surrounded by connective tissue; there is no preference of fiber types to the outside vs the center.
Gacggt 21:08, 23 June 2006 (UTC)
In pig muscle there is a distribution with slow in the centre, IIa around and IIx on outside of a fascicle.
[edit] Type 2x
"Human type IIx (aka IIB) are our fastest fibers." Is there a source that says humans have Type 2x muscle fibers? Studies I've read only talk about rats and mice having them. If you respond, please do so to my discussion page as well because I can never keep up with articles. Jamesters 23:39, 16 November 2006 (UTC)
