Auricle

This section is about
Structures of the Heart

An auricle is a feature of the anatomy of the heart.

There are two auricles in the heart. One auricle is attached to each of the anterior surfaces of the outer-walls of the atria (that is, the left atrium and the right atrium). Visually, they look like wrinkled pouch-like structures. Their purpose is to increase the capacity of the atrium, and so also increase the volume of blood that it is able to contain.

It is useful to know about the auricles for two reasons:

  1. to understand the physiology of how they work and how they contribute to the overall effectiveness of the heart, and
  2. because (in terms of anatomy), other important components of the heart are often described in terms of their position relative to one or other of the auricles.

These structures are called 'auricles' because they were thought to resemble dog's ears.

More about the heart and blood circulation:
See the following for more about the heart, blood, blood circulation, disorders of the blood circulation system, and related topics.

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Four Angels to my bed, Four Angels round my head, One to watch and one to pray, And two to bear my soul away. (Thomas Ady, 17th century writer.)

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