8 terms

Pathway of blood flow through the heart

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Step 1
Unoxygenated blood blood enters the right atrium from the superior and inferior vanae cavae.
Step 2
The blood flows through the tricuspid valve into the right ventricle.
Step 3
From the right ventricle, the blood flows through the pulmonic valve into the pulmonary artery.
Step 4
The right and left pulmonary arteries carry unoxygenated blood to the right and left lungs for gas exchange.
Step 5
The blood releases carbon dioxide as waste and picks up a fresh supply of oxygen.
Step 6
The oxygenated blood flows through fpur pulmonary veins from the lungs into the left atrium.
Step 7
From the left atrium, the blood flows through the bicuspid, or mitral valve into the left ventricle.
Step 8
Left ventricular contraction forces blood through the aortic valve into the aorta for distribution to the systemic circulation
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