Inferior papillary muscle of right ventricle
Musculus papillaris inferior ventriculi dextri
- Latin synonym: Musculus papillaris posterior ventriculi dextri
- Synonym: Posterior papillary muscle of right ventricle
- Related terms: Posterior papillary muscle
Definition
There are two main papillary muscles in the right ventricle, anterior and posterior:
- The anterior papillary muscle is the larger, and its chordæ tendineæ are connected with the anterior and posterior cusps of the valve:
- The posterior papillary muscle sometimes consists of two or three parts; its chordæ tendineæ are connected with the posterior and medial cusps.
In addition to these, some chordæ tendineæ spring directly from the ventricular septum (Septal papillary muscle), or from small papillary eminences on it, and pass to the anterior and medial cusps.
References
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
