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Related Experiment Video

Updated: Jul 12, 2026

Surgery and Sample Processing for Correlative Imaging of the Murine Pulmonary Valve

Surgery and Sample Processing for Correlative Imaging of the Murine Pulmonary Valve

Published on: August 5, 2021

Morphology and function of Bast's valve: additional insight in its functioning using 3D-reconstruction.

R Hofman¹, J M Segenhout, J A N Buytaert

¹Department of Otorhinolaryngology, University Medical Center Groningen, PO Box 30001, 9700 RB, Groningen, The Netherlands. r.hofman@kno.umcg.nl

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery

|August 29, 2007

Summary

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Heart Valves

Heart Valves

The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...

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The utriculo-endolymphatic valve

Area of Science:

Anatomy
Microscopy
Inner ear physiology

Background:

The utriculo-endolymphatic valve, discovered in 1928, has an unknown function.
Understanding this valve is crucial for inner ear research.

Purpose of the Study:

To elucidate the structure and potential function of the utriculo-endolymphatic valve.
To provide detailed 3D reconstructions of the valve and surrounding structures.

Main Methods:

Utilized orthogonal-plane fluorescence optical sectioning (OPFOS) microscopy.
Generated 3D reconstructions of the utriculo-endolymphatic valve and adjacent regions.

Main Results:

The valve exhibits a rigid, arch-like structure.
The utricular side features a flattened funnel leading to a narrow duct.

Related Experiment Videos

Last Updated: Jul 12, 2026

Surgery and Sample Processing for Correlative Imaging of the Murine Pulmonary Valve

Surgery and Sample Processing for Correlative Imaging of the Murine Pulmonary Valve

Published on: August 5, 2021

An opposing, compliant, single-cell-layer utricular membrane was observed.

Conclusions:

The valve likely opens and closes via the movement of the flexible utricular membrane against the rigid valve lip.
This mechanism suggests a role in regulating fluid dynamics within the inner ear.