type IIa muscle cell

Term ID

CL:0002214

Synonyms

• fast twitch A
• fatigue resistant fast twitch muscle cell
• type 2a muscle cell
• type 2a muscle fiber
• type IIa muscle fiber

Definition

A type II muscle cell that contains large amounts of myoglobin, has many mitochondria and very many blood capillaries. Type II A cells are red, have a very high capacity for generating ATP by oxidative metabolic processes, split ATP at a very rapid rate, have a fast contraction velocity and are resistant to fatigue.

References

• BTO:0001813
• FMA:84415

Ontology

Cell Ontology