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Related Concept Videos

Diencephalon: Hypothalamus and Coordination01:23

Diencephalon: Hypothalamus and Coordination

The hypothalamus is a small yet highly complex and essential brain region that plays a crucial role in regulating various bodily functions. Anatomically, it is located at the base of the brain, just above the brainstem and below the thalamus, forming part of the limbic system.
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
Autonomic Nervous System01:22

Autonomic Nervous System

The autonomic nervous system (ANS) is a critical component of the peripheral nervous system, primarily responsible for regulating involuntary bodily functions and maintaining homeostasis. It functions in tandem with the central nervous system (CNS) to seamlessly coordinate various physiological processes without the need for conscious control.
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
Neural Regulation of Blood Pressure01:18

Neural Regulation of Blood Pressure

The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
Regulation of Food Intake01:30

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
Physiology of Respiration II: Neurogenic Control of Respiration01:22

Physiology of Respiration II: Neurogenic Control of Respiration

The neurogenic control of respiration coordinates various neural networks and pathways to regulate breathing rate and depth, meeting the body's oxygen and carbon dioxide exchange requirements. This system adapts to physiological and environmental conditions, ensuring optimal breathing patterns.
Central Control
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Regulation of the Cardiovascular System01:27

Regulation of the Cardiovascular System

The regulation of the cardiovascular system allows the body to adapt to various demands and maintain homeostasis.
The regulation of the cardiovascular system involves the autonomic nervous system (ANS), baroreceptors, and chemoreceptors, ensuring that heart rate and blood pressure are appropriately modulated in response to varying physiological demands.
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Related Experiment Video

Updated: Jul 14, 2026

Quantifying Acute Changes in Renal Sympathetic Nerve Activity in Response to Central Nervous System Manipulations in Anesthetized Rats
06:30

Quantifying Acute Changes in Renal Sympathetic Nerve Activity in Response to Central Nervous System Manipulations in Anesthetized Rats

Published on: September 11, 2018

Neurohypophysial peptides and central cardiovascular control.

J L Montastruc, L Dang Tran, P Montastruc

    European Heart Journal
    |November 1, 1983
    PubMed
    Summary

    Neurohypophysial peptides like oxytocin and vasopressin influence blood pressure. Central vasopressin administration lowers blood pressure by modulating autonomic nervous system tone.

    Area of Science:

    • Neuroendocrinology
    • Cardiovascular Physiology

    Background:

    • Neurohypophysial peptides play roles in fluid balance and cardiovascular regulation.
    • Understanding the central cardiovascular effects of these peptides is crucial for comprehending blood pressure control mechanisms.

    Purpose of the Study:

    • To investigate the cardiovascular effects of neurohypophysial peptides administered intravenously and intracisternally in anesthetized dogs.
    • To elucidate the central mechanisms underlying vasopressin-induced changes in blood pressure and heart rate.

    Main Methods:

    • Anesthetized dogs were administered oxytocin and lysine vasopressin via intravenous and intracisternal routes.
    • Cardiovascular parameters, including blood pressure and heart rate, were monitored.
    • Pharmacological agents and surgical lesions were used to investigate the pathways involved.

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    Last Updated: Jul 14, 2026

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    Published on: September 11, 2018

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    Published on: August 4, 2023

    Main Results:

    • Intracisternal oxytocin increased blood pressure.
    • Intravenous lysine vasopressin caused a dose-dependent increase in blood pressure with bradycardia.
    • Intracisternal lysine vasopressin induced a dose-related decrease in blood pressure without altering heart rate.
    • Central hypotensive effects of vasopressin were blocked by adrenergic and cholinergic antagonists and absent in diabetes insipidus dogs with supra-opticohypophysial tract lesions.

    Conclusions:

    • Neurohypophysial peptides, particularly vasopressin, are involved in the central regulation of blood pressure.
    • Intracisternal vasopressin lowers blood pressure through decreased sympathetic and increased parasympathetic tone.
    • These findings highlight the significance of central neurohypophysial peptide signaling in cardiovascular homeostasis.