Summary Transport in mammals

Transport in mammals

The cardiovascular system is made up of the heart and a system of
interconnecting tubes, blood vessels. The blood remains in these vessels so
the system is known as a closed blood system.

 Blood travels twice through the heart in a complete circuit
 Blood is pumped out of the left ventricle into the aorta and then to te
rest of the body (except lungs)
 Returns to the right side of the heart in the vena cava
 This is called systemic circulation
 Blood is pumped to the lungs by the pulmonary arteries
 After blood has passed through the lungs it returns to the left side of
the heart in the pulmonary veins
 This is called pulmonary circulation
 This combination of pulmonary circulation and systemic circulation
makes a double circulation system