10 Comments so far

1. condor on October 27, 2009 5:53 am

   yes, a truly astonishing organ about the size of your fist.
   Without pause, it pumps the blood that carries life-sustaining nourishment to your billions of body cells. Of this pump, doctors in the book Your Heart observe: “It is more efficient than any machine of any kind yet devised by man.”
   The forces involved in the design and construction of the heart are beyond human understanding. At conception, for example, the blueprints for the heart, as well as all other body parts, are drawn up. Amazingly, in a matter of minutes all the instructions are determined within the fertilized cell to make a new person! No scientist knows how this is done.
   Without observable direction, the original fertilized egg cell soon begins to divide, forming cells that are different from their predecessors. Shortly, there are many different kinds of cells that start to form into various organs. At three weeks the partly developed heart begins to beat, probably even before the mother-to-be knows that she is pregnant.

2. to love is to live on October 27, 2009 6:47 am

   The heart is definitely an organ. The digestive system is not, although organs make up the digestive system.

3. secretva on October 27, 2009 6:57 am

   yes it is. it is part of the circulatory system.

4. spirit fingers on October 27, 2009 7:43 am

   Yes, it is.
   Digestive system is not an organ. It is a system.
   A system is made up of different kinds of organs, like, in the circulatory system, one part of it is the heart, which is an organ.
   Haha.

5. KS 26 on October 27, 2009 7:51 am

   Yes heart is an organ…..because it is made up of only one type of tissue & performs one specific function.
   Digestive system has various tissues like muscle, glands, connective tissue & it is made up of various organs like stomach, intestine therefore it is a whole system.
   Heart is a part of circulatory system.

6. Katelyn P on October 27, 2009 8:23 am

   The heart is an organ. The digestive system is a system made up by a number of different organs.

7. Tsarey on October 27, 2009 8:30 am

   heart is an organ.
   digestive system is a system..
   like blood circulation is a system that consists heart, vessels.. bla bla bla

8. Eden K on October 27, 2009 9:18 am

   yes, of course it is
   the heart makes up the organ system known as the cardiovascular system (also made up of blood, and the vessels)
   the digestive system is an organ system made up or organs like the liver and stomach etc.

9. Juliet on October 27, 2009 10:17 am

   yes. it’s from the cardiovascular system.

10. cuteange on October 27, 2009 10:31 am

    Yes, heart is an organ that is a size of your fist. Heart is one of the main organs of the circulatory system, it is also a pumping organ of the body that supplies oxygen and.
    A digestive system is not an organ it is a system that capables of giving energy to the body, because of the digestive organ we can easily absorp food and use this as energy.
    Hope it help.