Ejaculation. Physiology and dysfunction.

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  • Author(s): McDonnell SM;McDonnell SM
  • Source:
    The Veterinary clinics of North America. Equine practice [Vet Clin North Am Equine Pract] 1992 Apr; Vol. 8 (1), pp. 57-70.
  • Publication Type:
    Journal Article; Review
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: W.B. Saunders Country of Publication: United States NLM ID: 8511904 Publication Model: Print Cited Medium: Print ISSN: 0749-0739 (Print) Linking ISSN: 07490739 NLM ISO Abbreviation: Vet Clin North Am Equine Pract Subsets: MEDLINE
    • Publication Information:
      Original Publication: Philadelphia : W.B. Saunders, c1985-
    • Subject Terms:
      Ejaculation/*physiology ; Erectile Dysfunction/*veterinary ; Horse Diseases/*physiopathology ; Horses/*physiology; Animals ; Erectile Dysfunction/physiopathology ; Male
    • Abstract:
      In summary, important events of ejaculation include emission of sperm and the accessory gland fluids into the urethra, simultaneous closure of the bladder neck, and forceful ejaculation of the combined semen through the urethra. Emission and bladder neck closure are primarily alpha-adrenergically mediated thoracolumbar sympathetic reflex events with supraspinal modulation. Ejaculation is a sacralspinal reflex mediated by the pudendal nerve. In stallions, the most common ejaculation disorders are emission and ejaculation failure, and urine contamination of semen. Rare disorders are azoospermia and premature ejaculation. In a large percentage of cases, an ejaculation appears to be a result of musculoskeletal disorders or to be psychogenic in nature rather than attributable to specific ejaculatory dysfunction. Traditional therapeutic approaches for accommodating deficits can extend the breeding life of many stallions. Pharmacologic aids may be useful.
    • Number of References:
      33
    • Publication Date:
      Date Created: 19920401 Date Completed: 19920611 Latest Revision: 20191028
    • Publication Date:
      20240829
    • Accession Number:
      10.1016/s0749-0739(17)30466-2
    • Accession Number:
      1576554