When in the womb the fetus' lungs are not working because they do not have access to air. This means that blood does not flow down the pulmonary artery and a hole in the heart shunts the blood directly from one chamber of the heart to the other. This hole closes and the lungs begin to work after birth when the baby takes its first breath.
While in the womb the baby's blood is oxygenated by the placenta which interfaces to the mother's blood supply.
PLEASE NOTE: the lungs DO NOT "purify" blood. The function of the lungs is gas exchange (oxygen in - carbon dioxide out). The kidneys are the organs which remove waste products from (purify) the blood.
in a fetus blood does not reach the lungs for purification. In a baby blood goes to the lungs for oxygenation.
in a fetus blood does not reach the lungs for purification. In a baby blood goes to the lungs for oxygenation.
The fetus does not use its lungs to bring oxygen to the blood. (apex)
First the impure blood from all the body parts reach the right auricle and then into right ventricle.From right ventricle it is carried to lungs through PULMONARY ARTERY.In lungs,it gets purified[alveoli do the purification] and then it is sended to left auricle through PULMONARY VEIN.From left auricle it flows into left ventricle and then to all the body parts through systemic aorta.
Lungs are the vector through which oxygen can reach blood. Then blood carries oxygen to somatic cells.
Via the blood stream and umbilical cord.
Via the blood stream and umbilical cord.
They appear redder because they have picked up oxygen at the lungs.
Oxygen travels through ur blood vessels on your lungs then down to your blood stream.
Red blood cells release their oxygen in the capillaries. The oxygen diffuses across the capillary wall to reach the body tissues.
O2 and Co2 are transported throughout human body by blood. 97% of O2 combines with haemoglobin of RBCs to form oxyhaemoglobin within the lungs. The oxyhaemoglobin then gives out O2 to all the cells. The remaining 3% gets dissolved in blood plasma. 70% of CO2 gets dissolved in blood plasma to reach the lungs from the tissues. The remaining contents of Co2 then combines with haemoglobin to form carboxyhaemoglobin to reach the lungs from the tissues.
The mother is the "host" for the fetus until birth. All nutrition and growth support is done by virtue of the mother's umbilical cord. IT provides all oxygen and nutrition while connected.