PROPERTIES OF FIBERS, END-PLATES AND ACETYLCHOLINE-RECEPTORS IN THE DIAPHRAGM, MASSETER, LARYNGEAL, ABDOMINAL AND LIMB MUSCLES IN THE GOAT

Purpose: Although differences in fibre composition, fibre size or acet ylcholine receptor (AChR) density between muscles have often been prop osed to explain the unequal sensitivities of muscles to muscle relaxan t drugs, it is not clear whether or how these parameters differ among muscles or are related to one another. In this study, several muscles were examined to determine the composition and cross-sectional area (C SA) of types I and II fibres, the surface area of their motor endplate s (ESA), and their AChR density.