AORTIC BULB Meaning and
Definition
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The aortic bulb, also known as the aortic root or ascending aorta, is a critical anatomical structure in the human circulatory system that serves as the initial segment of the aorta. It is found at the base of the heart and represents the portion where the aorta emerges from the left ventricle. The aortic bulb consists of three distinct components: the aortic valve, sinuses of Valsalva, and the sinotubular junction.
The aortic valve is a tri-leaflet structure that acts as a one-way door, allowing the flow of oxygenated blood from the left ventricle into the aorta while preventing backward flow. It is composed of thin, pliable flaps, known as cusps or leaflets, that open during systole (ventricular contraction) and close during diastole (ventricular relaxation).
Located just above the aortic valve, the sinuses of Valsalva are three dilated areas that provide space for efficient blood flow and prevent reflux into the ventricle. These sinuses play a crucial role in maintaining normal cardiac function and reducing the risk of valve dysfunction and aortic root diseases.
Lastly, the sinotubular junction connects the aortic sinuses with the ascending aorta, ensuring a smooth transition of blood from the heart into the aorta. It represents the narrowest part of the aortic bulb and acts as a protective barrier against regurgitation of blood into the left ventricle. The aortic bulb is vital for proper delivery of oxygenated blood to the body and any abnormalities or diseases in this region can lead to severe medical conditions such as aortic valve stenosis or aneurysms.
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The first of the four dilatations of the primitive heart in the embryo.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for AORTIC BULB
- aortic budb
- aortic buhb
- aortic bunb
- aortic bumb
- aortic bulr
- aortic bulj
- aortic bulf
- aortic bulc
- aoarticbulb
- aoreticbulb
- a ortic bulb
- ao rtic bulb
- aor tic bulb
- aort ic bulb
- aorti c bulb
- aortic b ulb
- aortic bu lb
- aortic bul b
Etymology of AORTIC BULB
The word "aortic" originated from the Greek word "aorte" or "aortē", meaning "great artery". The term "bulb" comes from the Latin word "bulbus", which means "round swelling" or "bulge". In anatomical terms, the aortic bulb refers to the rounded part at the beginning of the aorta, where the aortic valve is located.
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