BAINBRIDGE REFLEX Meaning and
Definition
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The Bainbridge reflex, also known as the atrial or cardiopulmonary reflex, is a physiological phenomenon that refers to a reflex response by the body to changes in blood volume within the cardiovascular system. It is named after the British physiologist Francis Arthur Bainbridge, who first described the reflex in 1915.
The Bainbridge reflex is initiated when an increased volume of blood enters the atria of the heart, specifically the right atrium. This can occur due to various factors such as increased venous return or infusion of fluids. When the stretch receptors in the atrial walls detect this increase in blood volume, sensory information is sent to the brain through the vagus nerve.
Upon receiving these signals, the brain activates the sympathetic nervous system to stimulate the heart. This results in an increased heart rate (tachycardia) and an augmentation of cardiac contractility. The purpose of this reflex is to ensure proper venous return and maintain cardiac output in response to changes in blood volume.
The Bainbridge reflex plays an important role in regulating cardiovascular homeostasis, primarily by adjusting heart rate and cardiac output to match the body's blood volume. This reflex is particularly significant during exercise or conditions that require increased blood flow, as it assists in providing adequate oxygenation to the tissues and organs.
Overall, the Bainbridge reflex serves as a feedback mechanism, responding to changes in blood volume by adjusting heart rate and optimizing cardiovascular function.
Common Misspellings for BAINBRIDGE REFLEX
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Etymology of BAINBRIDGE REFLEX
The term "Bainbridge reflex" refers to an increase in heart rate that occurs when there is an increase in blood volume. It is named after the American physiologist Francis Arthur Bainbridge, who conducted research on this reflex in the early 20th century.
The word "reflex" originates from the Latin word "reflexus", which means "bent back" or "reflection". In physiology, a reflex is an automatic or involuntary response to a stimulus.
The last name "Bainbridge" is of English origin and is derived from the place name "Bainbridge" in North Yorkshire, England. It comes from the Old Norse term "Beinn Briggja", meaning "bridge over the River Bain". The name "Bainbridge" eventually became a surname associated with people who lived near or worked on a bridge over the Bain river.
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