With refrence to the circulatory system of human foetus, which of the following statement is not correct?
Ductus arteriosus connects the pulmonary artery to the aorta
Foetal haemoglobin combines more readily with oxygen than adult haemoglobin does
Ductus venosus carries blood from placenta and foetal gut directly to the fetal liver
Blood is pumped to the placenta by the foetal heart
