What question did this study set out to answer?

To characterize the histological architecture, innervation patterns, musculature, and blood supply of guinea-pig atrioventricular valves.

November 1, 1973American Journal of Anatomy

The atrioventricular valves of the guinea‐pig. I. A light microscopic study

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Key result

Light microscopic examination of guinea-pig atrioventricular valves revealed complex innervation, musculature, and a collagenous support system, with no consistent association between muscles and nerves.

Authors

JEJeffrey P. EllisonSUNY Brockport RHRichard G. HibbsStatistical Research (United States)

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Implication

Valve innervation patterns do not alter clinical practice; leaves open neural modulation of cusp performance for targeted studies.

Key Points

To characterize the histological architecture, innervation patterns, musculature, and blood supply of guinea-pig atrioventricular valves.
Conducted light microscopic histological evaluations of guinea-pig mitral and tricuspid valve cusps.
Mapped adrenergic and acetylcholinesterase-positive nerve distributions alongside collagenous scaffolding and valvar muscle orientation.
Identified dense adrenergic nerve plexuses and putative sensory acetylcholinesterase-positive endings concentrated in the lower third of valve cusps, an area devoid of muscle and vasculature.
Demonstrated an intrinsic skeletal network formed by overlapping collagenous ribs extending upward from the chordae tendineae into the cusps.
Observed complex valvar musculature—including an annular sphincter-like ring and inter-rib muscle meshworks—that lacks consistent direct association with valvar nerves.

Cite This Study

Ellison et al. (1973) studied this question. Light microscopic examination of guinea-pig atrioventricular valves revealed complex innervation, musculature, and a collagenous support system, with no consistent association between muscles and nerves.

synapsesocial.com/papers/6a6bbd1bec7caa0664b38ef1 https://doi.org/10.1002/aja.1001380304

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The atrioventricular valves of the guinea‐pig. I. A light microscopic study

Discussion

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Implication

Key Points

Cite This Study

The atrioventricular valves of the guinea‐pig. I. A light microscopic study

Discussion

Member takes

Implication

Key Points

Cite This Study

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