subendocardial layer

[ sŭb′ĕn-dō-kärdē-əl ]

n.

The layer of loose connective tissue that joins the endocardium and myocardium.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.