Lungs
Kidneys
Brain.
The skin is the largest organ, but of the two organs quoted in the question, the liver is larger than the heart.
The three major organs of the circulatory system are: The Heart, The Brain and The Lungs:
The skin and the heart are organs of the body.
heart and lungs
The lungs and the heart.
The heart and the small intestine
An abdominocardiac reflex is a fluctuation in the rhythm of the heart, associated with mechanical stimulus of the abdominal organs.
If the organ in question is the heart, we can conveniently divide up the heart into the two atria and the two ventricles. Not all organs can be easily analysed in terms of two things. Organs are actually made up of lots of things.
lungs and heart
Lungs
The heart and the lungs
Heart and kidney.
I think it is the heart and lungs.
There are hundreds of different articles in the world that mention organs. The brain and heart are two of the most mentioned organs in articles.