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Related Experiment Videos

Penile vascular cushions and erection

H F Newman, V Tchertkoff

    Investigative Urology
    |July 1, 1980
    PubMed
    Summary

    Penile intimal cushions, structures in blood vessels, were found in adult but not newborn penises. Researchers suggest these intimal cushions passively aid in penile erection.

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    Area of Science:

    • Vascular anatomy
    • Urology
    • Histology

    Background:

    • Penile intimal cushions are specialized structures within the vascular walls of the penis.
    • Their role in penile physiology, particularly erection, remains incompletely understood.
    • Previous research has not definitively established the presence or function of these cushions across different age groups.

    Purpose of the Study:

    • To investigate the presence and distribution of penile intimal cushions in adult and newborn penile vasculature.
    • To evaluate the potential role of intimal cushions in the mechanism of penile erection.
    • To explore theories regarding the pathogenesis and adaptive significance of penile intimal cushions.

    Main Methods:

    • Histological examination of penile arteries and veins from five adult and one newborn human subjects.
    • Cross-sectional analysis of muscular vessels to identify and quantify intimal cushions.
    • Review and presentation of existing theories on the development and function of intimal cushions.

    Main Results:

    • Penile intimal cushions were identified in approximately one-third of the muscular vessels examined in adult penile tissue.
    • No intimal cushions were detected in the penile vasculature of the newborn subject.
    • The findings suggest a developmental or age-related presence of these structures.

    Conclusions:

    • Penile intimal cushions appear to be present in adult penile vasculature but absent in newborns.
    • The study postulates a passive role for intimal cushions in the erectile process.
    • Linear stress is favored as a potential adaptive mechanism in the pathogenesis of penile intimal cushions.

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