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Reflex innervation of the bulbocavernosus muscle.

Authors
  • Yang, C C
  • Bradley, W E
Type
Published Article
Journal
BJU international
Publication Date
May 01, 2000
Volume
85
Issue
7
Pages
857–863
Identifiers
PMID: 10792166
Source
Medline
License
Unknown

Abstract

Three distinct somatic bulbocavernosus reflexes were detected which are components of normal ejaculation. BCM contraction can be elicited after stimulating the dorsal penile nerve at the glans and the anterior urethra; these are the flexor responses of the bulbocavernosus reflex. BCM contraction can also be induced on stimulating the perineal nerve, which is the pathway through which the stretch and the tendon organ reflexes are carried to mediate muscle tone. The motor innervation of the BCM for all reflexes is carried through a branch of the perineal nerve. The findings may be relevant to the evaluation of ejaculatory disorders.

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