Question

Imagine you were a deoxygenated blood cell on your way back to the heart you would first have to enter the heart either through the ________atria_____________ or the ____ventricle_____________________. You and all your friends would then fill up the first chamber known as the _____ateries___________________. When the capacity in that chamber reaches its limit, you guys would be forced through the ________________ valve and into the next chamber known as the ________________________. After contracting, that chamber would squeeze you guys through the _____________________ valve and up into the __________________ artery where you would ride all the way to the _______________________ to pick up a fresh batch of ________________. Now that everyone is happy, you guys make your way back to the heart by traveling through the ____________________ veins. You enter the third chamber known as the ________________. When the capacity in that chamber reaches its limit, you guys would be forced through the ________________ valve and into the next chamber known as the ________________________. After contracting, that chamber would squeeze you guys through the _____________________ valve and up into the __________________ so you can delivery oxygenated blood to the rest of the body!

Answer 1

Deoxygenated blood enters the heart through the superior and inferior cava veins to the right atrium.

When the right atrium is full of blood, the heart valves (tricuspid valves) open and the blood flows to the right ventricle. Once the ventricle is full, the heart valves close, and the ventricle contracts sending the blood through the pulmonary valves to the pulmonary arteries.

Then the deoxygenated blood will flow to the lungs where it will be oxygenated. Once the blood is oxygenated, it flows back to the heart through the pulmonary veins to the left atrium.

Once the left atrium is full, the heart valves (mitral valves) open and the blood flows to the left ventricle. When the ventricle reaches its maximum capacity it contracts and the blood is sent through the aortic valve into the aorta, and through this and other arteries, the oxygenated blood is transported through the whole body.