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Related Experiment Videos

[Relationship between central and peripheral mechanisms in regulating capacitance vessels].

B I Tkachenko, A K Savel'ev

    Fiziologicheskii Zhurnal SSSR Imeni I. M. Sechenova
    |May 1, 1978
    PubMed
    Summary

    This study found no specific structures that only affect capacitance vessels. Both resistance and capacitance vessels respond to the medulla oblongata, with reflex responses varying based on pressure.

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    [Relations between changes of the pulmonary and systemic hemodynamics following neurogenic stimuli].

    Rossiiskii fiziologicheskii zhurnal imeni I.M. Sechenova·2008

    Area of Science:

    • Cardiovascular Physiology
    • Autonomic Nervous System Regulation
    • Vascular Biology

    Context:

    • Investigating the differential regulation of vascular beds.
    • Understanding the role of the medulla oblongata and sympathetic nerves in cardiovascular control.
    • Examining venous outflow pressure effects on vascular responses.

    Purpose:

    • To determine if specific structures selectively control capacitance vessels.
    • To analyze the effects of medulla oblongata stimulation and sympathetic nerve activation on resistance and capacitance vessels.
    • To elucidate the mechanisms underlying differential vascular responses.

    Summary:

    • Acute experiments on cats revealed that bulbar structures influence both resistance and capacitance vessels.
    • No structures were identified that exclusively target capacitance vessels.

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  • Reflex responses in pre- and post-capillary vessels can differ, with transmural pressure affecting capacitance vessel dilation.

    • Impact:

    • Provides insights into the complex control of vascular capacitance.
    • Highlights the integrated role of central and local mechanisms in regulating blood flow.
    • Contributes to understanding the neurovascular control of circulatory dynamics.