Smallest cardiac veins

Smallest Cardiac Veins

The Smallest Cardiac Veins (pronunciation: /ˈsmɔːlɪst ˈkɑːrdiæk veɪnz/), also known as Thebesian veins, are minute veins in the walls of the heart that drain directly into the chambers of the heart, particularly the right atrium and right ventricle.

Etymology

The term "Thebesian veins" is derived from the name of the German anatomist Adam Christian Thebesius who first described these veins in 1708.

Anatomy

The Smallest Cardiac Veins are distributed throughout the myocardium, the muscular tissue of the heart. They are most abundant in the endocardium, the innermost layer of the heart, and are less common in the epicardium, the outermost layer.

Function

The primary function of the Smallest Cardiac Veins is to drain the blood from the walls of the heart directly into its chambers. This is in contrast to the larger coronary veins which drain into the coronary sinus, a large vein on the posterior aspect of the heart.

Related Terms

• Myocardium
• Endocardium
• Epicardium
• Coronary veins
• Coronary sinus
• Right atrium
• Right ventricle

External links

• Medical encyclopedia article on Smallest cardiac veins
• Wikipedia's article - Smallest cardiac veins

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