auricle

views updated May 18 2018

au·ri·cle / ˈôrikəl/ • n. Anat. & Biol. a structure resembling an ear or earlobe. ∎ another term for atrium (of the heart). ∎  strictly, a small muscular appendage of each atrium. ∎  the external part or pinna of the ear.

auricle

views updated May 11 2018

auricle
1. (atrium) The chamber of a heart into which blood flows from veins and from which blood flows to a ventricle.

2. External ear.

3. An internal projection from one of the ambulacral plates around the peristome of echinoids which serves for the attachment of muscles supporting the Aristotle's lantern.

auricle

views updated May 18 2018

auricle cavity of the heart XV; external ear, lobe-shaped process XVII. — L. auricula, dim. of auris EAR
So auricular XV (see -AR).

auricle

views updated Jun 08 2018

auricle (or-i-k'l) n.
1. a small pouch in the wall of each atrium of the heart: the term is also used incorrectly as a synonym for atrium.

2. see pinna.

auricle

views updated Jun 11 2018

auricle
1. See atrium.

2. See pinna.

auricle

views updated May 11 2018

auricle An appendage, which may resemble the ear of an animal, occurring at the base of a leaf-blade.