How Do You Spell AURICULOVENTRICULAR VALVE?

Pronunciation: [ˌɔːɹɪkjˌʊləvɪntɹˈɪkjʊlə vˈalv] (IPA)

The auriculoventricular valve is a vital structure of the heart that regulates blood flow. The word is spelled using the International Phonetic Alphabet as /ɔːˌrɪkjʊləʊvɛnˈtrɪkjʊlər/ which represents the sounds of the word. The first syllable is pronounced as "aw-rik-yuh-loh", with the accent on the second syllable. The second part is pronounced as "ven-TRIK-yuh-lar". The term comes from Latin, where "auricula" means ear or ear-like structure, and "ventriculus" means cavity, referring to the different parts of the heart.

AURICULOVENTRICULAR VALVE Meaning and Definition

1. The auriculoventricular valve refers to a specialized valve located between the atria and ventricles of the heart, specifically the left and right chambers. Also known as the AV valve or atrioventricular valve, it plays a crucial role in regulating the flow of blood within the heart.

   The human heart consists of four chambers: the right atrium, right ventricle, left atrium, and left ventricle. The auriculoventricular valve is present in the two lower chambers, separating the atria and the ventricles. There are two distinct auriculoventricular valves in the heart: the tricuspid valve and the mitral valve.

   The tricuspid valve is located between the right atrium and right ventricle, whereas the mitral valve is situated between the left atrium and left ventricle. Both valves are composed of flap-like structures, known as cusps or leaflets, which open and close to allow the flow of blood in a specific direction.

   During the cardiac cycle, when the atria contract, blood passes through the open AV valves into the ventricles. Subsequently, as the ventricles contract, the AV valves close, preventing the backflow of blood into the atria. This ensures that the blood is propelled forward into the circulation, allowing for an efficient functioning of the heart.

   Overall, the auriculoventricular valve acts as a vital component of the cardiac system, ensuring the unidirectional flow of blood and maintaining proper heart function.

2. Left, mitral valve, valvula bicuspidalis; right, valvula tricuspidalis.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

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Etymology of AURICULOVENTRICULAR VALVE

The word "auriculoventricular valve" is formed by combining two Latin roots: "auriculo" and "ventricular", along with the common English word "valve". Here is the breakdown:

1. "Auriculo" - This root comes from the Latin word "auricula", which means "little ear"., it refers to the atrium (auricle) of the heart, which is responsible for receiving blood.

2. "Ventricular" - This root comes from the Latin word "ventriculus", which means "belly" or "little stomach"., it refers to the ventricle, the lower chamber that pumps blood out of the heart.

3. "Valve" - This is a common English word derived from the Latin word "valva", which means "fold" or "valve".