ARTERIAL BULB Meaning and
Definition
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Arterial bulb refers to a specific anatomical feature found in the cardiovascular system. It is a region of the heart that serves as an expansion chamber, playing a vital role in the regulation of blood flow. The arterial bulb is also known as the bulbus arteriosus or conus arteriosus.
At the base of the main blood vessel, known as the aorta, the arterial bulb is located just above the heart's ventricular chambers. It connects the aorta to the pulmonary artery, which carries deoxygenated blood from the heart to the lungs for oxygenation. In simpler terms, it is the initial segment of the main blood vessel leaving the heart.
The arterial bulb functions by maintaining a steady and continuous blood flow, particularly during diastole (the relaxation phase of the cardiac cycle). It helps in reducing fluctuations of blood pressure by storing energy when the heart contracts and releasing it during relaxation. This process ensures a relatively stable blood flow throughout the cardiac cycle.
The arterial bulb also plays a role in preventing the blood vessels from collapsing due to rapid changes in pressure. Its elastic properties allow it to expand and recoil, effectively absorbing and dampening the force generated by the pumping action of the heart. This helps to maintain a smooth and consistent flow of blood through the circulatory system. Additionally, the arterial bulb aids in preventing backflow of blood into the heart, ensuring that blood can only flow forward.
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A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for ARTERIAL BULB
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Etymology of ARTERIAL BULB
The term "arterial bulb" is a combination of two words: "arterial" and "bulb".
The word "arterial" derives from the Latin "arteria", which means "windpipe" or "artery". In the 16th century, the term was adopted into English to specifically refer to blood vessels that carry oxygenated blood away from the heart to the rest of the body.
On the other hand, the word "bulb" comes from the Latin "bulbus", meaning "onion" or "bulbous root". It was originally used to describe the rounded, swollen shape of the onion.
In the context of anatomy, an "arterial bulb" refers to a specialized structure found in certain blood vessels, particularly in the aorta and the pulmonary artery. It is a bulb-shaped enlargement at the beginning of an arterial section, which helps regulate blood flow and maintain blood pressure.
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