When the ventricle is complete, the mitral valve shuts. This prevents blood from flowing backward into the atrium whilst the ventricle contracts. When blood travels throughout the pulmonic valve, it enters your lungs. This is called the pulmonary circulation. From the pulmonic valve, blood travels into the pulmonary artery to https://sethwzhpe.thezenweb.com/4200-loan-for-dummies-75034073