Sexual dimorphism in the fibers of a "clasp" muscle of Xenopus laevis.

Abstract:

:When antibodies specific to fast-twitch, slow-twitch, and slow-tonic myosins were used to stain the clasp muscle, m. sternoradialis, of Xenopus laevis, three predominant fiber types were identified in both males and females. Three fiber types can also be distinguished by the diameters and conduction velocities of their motor nerves. Significant differences in the numbers of slow-tonic fibers were identified between the genders and between control and castrated male animals. This finding suggests that these slow-tonic fibers, which probably dominate the clasp reflex during mating, may be under hormonal control.

journal_name

Exp Neurol

journal_title

Experimental neurology

authors

Rubinstein NA,Erulkar SD,Schneider GT

doi

10.1016/0014-4886(83)90414-4

subject

Has Abstract

pub_date

1983-11-01 00:00:00

pages

424-31

issue

2

eissn

0014-4886

issn

1090-2430

journal_volume

82

pub_type

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