Welcome to International Journal of Anatomy and Research

Type of Article: Original Research

Year: 2016 | Volume 4 | Issue 2 | Page No. 2285-2293

Date of Publication: 31-05-2016

DOI: http://dx.doi.org/10.16965/ijar.2016.197

A STUDY OF PAPILLARY MUSCLES OF THE LEFT VENTRICLE IN THE ADULT HUMAN CADAVERS

Bhagya Shree ^*1, Rajan Kumar Singla ², Ravi Kant Sharma ³, Ashwini Kumar ⁴.

^*1 Senior Tutor, Department of Anatomy, Guru Gobind Singh Medical College, Faridkot, Punjab, India.

² Professor and Head, Department of Anatomy, Govt. Medical College, Patiala, Punjab, India.

³ Professor and Head, Department of Anatomy, Govt. Medical College, Amritsar, Punjab, India.

⁴ Assistant Professor, Department of Forensic Medicine, Guru Gobind Singh Medical College, Faridkot, Punjab, India.

Address: Dr. Bhagya Shree, Senior Tutor, Department of Anatomy, Guru Gobind Singh Medical College, Faridkot, Punjab, India.
E-Mail: drbhagyashree80@gmail.com

ABSTRACT

Introduction: Normal valve function depends upon the anatomic and mechanical integrity of the atrioventricular ring, the valve leaflets, the chordae tendineae and papillary muscles. Papillary muscle rupture and dysfunction can lead to complications of prolapsed mitral valve and mitral regurgitation.
Materials and Methods: The material for present study consisted of 50 formalin fixed adult apparently normal cadaveric hearts belonging to either sex obtained from the Department of Anatomy, Govt. Medical College, Amritsar. These hearts were dissected to open the left ventricle and to expose the papillary muscles. Different morphological features of papillary muscles were noted and measurements were taken.
Results: The anterolateral papillary muscle usually said to be single bellied was found so in majority of the hearts (86%) being double bellied in the rest of 14% hearts. However, the posteromedial papillary muscle usually said to be double bellied was found so only in 56% of the hearts, being 3 bellied in 20%, 4 bellied in 10% & single bellied in 14%. Negligible text is available about the number of heads of papillary muscles. It varied from 1- 6 and 1- 5 in anterolateral & posteromedial papillary muscles respectively which is another notable variation. Different shapes and pattern of papillary muscles have also been identified. An additional divison of study was measurement of lengths of papillary muscles which thus provides a base line data for further detailed studies based upon a larger data base.
Conclusion: In this study, observations of more number of bellies of anterolateral papillary muscle and posteromedial papillary muscle instead of the only twos, are important and demand a modification in standard textbooks of anatomy. Notable variations of papillary muscles are important for scientists worldwide in order to ascertain the reason behind each specific architechtural arrangement. This will enable the cardio thoracic surgeons to tailor the surgical procedures according to the individual papillary muscle pattern.
Key Words: Papillary muscles, left ventricle, mitral valve, Heart.

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Bhagya Shree, Rajan Kumar Singla, Ravi Kant Sharma, Ashwini Kumar. A STUDY OF PAPILLARY MUSCLES OF THE LEFT VENTRICLE IN THE ADULT HUMAN CADAVERS. Int J Anat Res 2016;4(2):2285-2293. DOI: 10.16965/ijar.2016.197