Baroreflex (also known as Baroreceptor Reflex, Baroreceptor Reflexes): A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outfl

NIH MeSH · D017704Phenomena and Processes

Baroreflex

Also known asBaroreceptor Reflex · Baroreceptor Reflexes · Reflexes, Baroreceptor · Reflex, Baroreceptor · Baroreflexes

Definition

A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.

MeSH classification

  • G09.330.380.057
  • G11.561.731.063

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Related concepts

Arterial Pressure

The blood pressure in the ARTERIES. It is commonly measured with a SPHYGMOMANOMETER on the upper arm which represents the arterial pressure …

Atrial Pressure

The pressure within the CARDIAC ATRIUM. It can be measured directly by using a pressure catheter (see HEART CATHETERIZATION). It can be also…

Blood Viscosity

The internal resistance of the BLOOD to shear forces. The in vitro measure of whole blood viscosity is of limited clinical utility because i…

Blood Volume

Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.

Capillary Resistance

The vascular resistance to the flow of BLOOD through the CAPILLARIES portions of the peripheral vascular bed.

Cardiac Volume

The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the cardiac cycle. The amount of …

Common questions about Baroreflex

What does Baroreflex mean in medicine?
A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Baroreflex known by any other names?
Yes. Baroreflex is also referred to as Baroreceptor Reflex, Baroreceptor Reflexes, Reflexes, Baroreceptor, Reflex, Baroreceptor in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Baroreflex sit in the medical classification?
Baroreflex falls under the broader medical category "Phenomena and Processes" in the MeSH hierarchy (tree numbers: G09.330.380.057, G11.561.731.063). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Baroreflex?
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Source: NIH MeSH 2026 (D017704) — National Library of Medicine, public domain. View official MeSH record ↗