How is the digestive system related to the cirulatory or cardiovascular system?!


Question: I need help!!!!


Answers: I need help!!!!

when you eat something, it has to work its way through the digestive tract where the food is broken and absorbed at different parts through the digestive tract, which comprises the oesophagus, the stomach, small and large intestines, and the anus.

when the molecules are absorbed from here they are absorbed into veins i.e. vessells which will be taking blood back to the heart. before this blood reaches the heart, all the veins that drain the digestive tract converge and form the potal vein, which then goes directly into the liver. this means that toxins and so on can be metabolised and broken down. the blood then leaves the liver, through the inferior vena cava, which is at the superior aspect of the liver, and drains into the right atrium of the heart. (atria are the two top chambers of the heart and pump blood into the ventricles, the bottom chambers, which then pump blood to the lungs or the body depending on which ventricle the blood is coming out of)
the blood from the right atria then enters the right ventricle and is pumped to the lungs to be oxygenated, and enters back into the left atrium. it is then pumped into the left ventricle, which then pumps this oxygenated, nutrient full blood around the body





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