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Ejaculation. Physiology and dysfunction.

S M McDonnell¹

¹Section of Reproduction, University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square.

The Veterinary Clinics of North America. Equine Practice

|April 1, 1992

Summary

This summary is machine-generated.

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Ejaculation involves sperm and fluid emission, bladder neck closure, and forceful expulsion. Stallion ejaculation disorders often stem from musculoskeletal or psychogenic issues, not just specific dysfunction.

Area of Science:

Reproductive Biology
Veterinary Science
Neurophysiology

Background:

Ejaculation is a complex process involving multiple physiological events.
Understanding the neural control of ejaculation is crucial for diagnosing and treating disorders.

Purpose of the Study:

To summarize the key events and neural mechanisms of ejaculation.
To outline common ejaculation disorders in stallions and their potential causes.
To discuss therapeutic approaches for stallions with ejaculation deficits.

Main Methods:

Review of physiological and neurological mechanisms of ejaculation.
Analysis of common ejaculation disorders in stallions.
Discussion of current and potential therapeutic strategies.

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Main Results:

Ejaculation comprises emission, bladder neck closure, and expulsion, controlled by sympathetic and sacral nerves.
Common stallion ejaculation disorders include emission/ejaculation failure and urine contamination.
Many ejaculation issues in stallions are linked to musculoskeletal or psychogenic factors.

Conclusions:

Effective management of stallion ejaculation disorders can prolong breeding life.
Pharmacological interventions may offer benefits for certain ejaculatory dysfunctions.