Is it true that wastes are carried by the blood from the body to the heart through the left ventricle?
1 Answer
Yes. It is true.
Explanation:
First, let's see what are the waste products. These include urea, creatinine, uric acid, end products of hemoglobin breakdown and metabolites of various hormones.
These are carried by blood to the heart by veins. Oxygen depleted blood with these waste products come to Right atrium. Then it goes to the lungs by right ventricle. In the lungs blood become oxygeneted. But the waste products remain.
from the lungs blood with oxygen and waste comes to left atrium. From atrium it goes to left ventricle. So, is the blood containing metabolic waste product come to left ventricle? yes, it does.
From the left ventricle blood flows to arteries. And about 22% of the blood that leave the left ventricle in each minute goes to the kidneys. Kidney is the organ of excretion. This is where blood become waste free.
The diagram of blood flow through the heart :
Then from the kidneys through the renal veins waste-free blood comes to Inferior venacava and then to right atrium. I mentioned earlier that blood with waste products also comes to right atrium.
The diagram shows the relation among kidneys, inferior venacava and the heart :
Yes, there is a mixture between waste-free and waste-full blood. Anyway the cycle repeats. At any time there are waste products in our blood and wastes are being excreted by kidneys. This continue until death or kidney shut down.
