Which organ system does the heart belong to?
Nervous system
Digestive system
Respiratory system
Circulatory system
The heart is a specialized organ that pumps blood throughout the body. In human beings, it is present on the left side of our chest.
If a patient is put on dialysis, he is most likely suffering from a severe ailment of the : (a) circulatory system (b) respiratory system (c) excretory system (d) digestive system