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[[Image:Immacualte Heart of Mary.JPG|thumb|right|''The Immaculate Heart of Mary'']]The '''heart''' is an [[organ]] that pumps [[blood]] via the [[circulatory system]] to the rest of the body. The heart is a marvelously crafted [[muscle|muscular]] pump and in humans, the heart of an [[embryo]] begins beating 21 days after [[conception]]. According to the [[Bible]] the heart is the seat for our deepest emotions and wishes. Change in personality has been noted in heart transplant survivors consistent with this.{{fact}}

[[Image:Immacualte Heart of Mary.JPG|thumb|right|''The Immaculate Heart of Mary'']]The '''heart''' is an [[organ]] that pumps [[blood]] via the [[circulatory system]] to the rest of the body. The heart is a marvelously crafted [[muscle|muscular]] pump and in humans, the heart of an [[embryo]] begins beating 21 days after [[conception]]. According to the [[Bible]] the heart is the seat for our deepest emotions and wishes.  

The heart is situated inside the [[thorax]] in vertebrates and in the human body is slightly to the left. The human heart consists of 4 main chambers, 2 [[atria]] and 2 [[ventricle]]s. The right side of the heart receives blood from the body and pumps it to the lungs where it is oxygenated and returns to the left side of the heart. The left side of the heart pumps the oxygen-carrying blood to the rest of the body. A heartbeat is a single pumping cycle of the heart which comprises three major stages: atrial systole, ventricular systole and complete cardiac diastole.  

The heart is situated inside the [[thorax]] in vertebrates and in the human body is slightly to the left. The human heart consists of 4 main chambers, 2 [[atrium|atria]] and 2 [[ventricle]]s. The right side of the heart receives blood from the body and pumps it to the lungs where it is oxygenated and returns to the left side of the heart. The left side of the heart pumps the oxygen-carrying blood to the rest of the body. A heartbeat is a single pumping cycle of the heart which comprises three major stages: atrial systole, ventricular systole and complete cardiac diastole.  

According to the scriptures, Heart is the seat of the [[sin]]. <ref>http://www.bible.org/page.php?page_id=858.# The seat of Sin, the heart</ref>

According to the scriptures, Heart is the seat of the [[sin]]. <ref>http://www.bible.org/page.php?page_id=858.# The seat of Sin, the heart</ref>

== See also ==

== See also ==

*[[heart attack]]

*[[Heart attack]]

*[[heart failure]]

*[[Rheumatic heart disease]]

*[[Rheumatic heart disease]]

*[[Mitral stenosis]]

*[[Mitral stenosis]]