Circulatory System
The heart lies in the center of your chest and is about the size of your fist. The heart is a hollow and is made of specialized muscle tissue. The heart is a specialized pump that’s purpose is to circulate blood throughout the circulatory system. The circulatory system is the transportation system within the body. The circulatory system is responsible for bringing necessary “supplies” (oxygen and glucose) to the skeletal muscles and pick up waste products of muscle metabolism (water, carbon dioxide) to the kidneys and lungs to be eliminated.
Circulatory System
