Papillary muscle
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| Papillary muscle | |
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| Interior of right side of heart. | |
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| Diagram showing relations of opened heart to front of thoracic wall. Ant. Anterior segment of tricuspid valve. A O. Aorta. A.P. Anterior papillary muscle. In. Brachiocephalic artery (Innominate). L.C.C. Left common carotid artery. L.S. Left subclavian artery. L.V. Left ventricle. P.A. Pulmonary artery. R.A. Right atrium. R.V. Right ventricle. V.S. Ventricular septum. | |
| Latin | musculus papillaris |
| Gray's | subject #138 532 |
| Dorlands/Elsevier | m_22/12550081 |
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Overview
In anatomy, the papillary muscles of the heart serve to limit the movements of the mitral and tricuspid valves. These muscles contract to tighten the chordae tendineae, which in turn prevent inversion. This occurs in response to pressure gradients. Instead they brace the valves against the high pressure, preventing regurgitation of ventricular blood back into the atrial cavities.
 Image courtesy of Hartwig, Walter C., The Editor of Fundamental Anatomy, 1st Edition, 2008 and copyrighted |
 Image courtesy of Hartwig, Walter C., The Editor of Fundamental Anatomy, 1st Edition, 2008 and copyrighted |
Additional images
 Section of the heart showing the ventricular septum. |
 Schematic representation of the atrioventricular bundle of His. |
External links
- papillary+muscle at eMedicine Dictionary
- SUNY Labs 20:19-0106 - "Heart: The Right Atrioventricular (Tricupsid) Valve" (anterior, posterior, septal papillary muscles)
- SUNY Labs 20:26-0105 - "Heart: The Left Atrioventricular (Mitral) Valve" (anterior, posterior papillary muscles)
- -1368719301 at GPnotebook
- Bioweb at UWLAX Human heart model (left internal anatomy)
- Atlas of anatomy at UMich ht_rt_vent - "Right atrioventricular bundle branch, anterior view"
- Definition of Papillary muscle
- MedicineNet Search Results
Additional Reading
- Hartwig, Walter C., Fundamental Anatomy, 1st ed., 2007 ISBN 978-0-7817-6888-7
- Moss and Adams' Heart Disease in Infants, Children, and Adolescents Hugh D. Allen, Arthur J. Moss, David J. Driscoll, Forrest H. Adams, Timothy F. Feltes, Robert E. Shaddy, 2007 ISBN 0781786843
- Braunwald's Heart Disease, Libby P, 8th ed., 2007, ISBN 978-1-41-604105-4
- Hurst's the Heart, Fuster V, 12th ed. 2008, ISBN 978-0-07-149928-6
- Willerson JT, Cardiovascular Medicine, 3rd ed., 2007, ISBN 978-1-84628-188-4
de:Papillarmuskel nl:Papillairspieren
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
