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
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:
understand the physiology of how they work and how they contribute to the
of the heart, and
- 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
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