<span>The mitral valve does this between the left atrium and ventricle. The "lub" is the sound of the tricuspid and mitral valves closing. Each of your heart's ventricles has an outlet valve. The right ventricle uses the pulmonary valve to help move blood into the pulmonary arteries.</span>
B. 24/8 hours ...........................................................
Answer: incarceration
Explanation: Mark me brainly please
<span>It must follow a diet, otherwise it may have serious health problems.</span><span>Play sports, consult a dietician and see <span>his doctor.</span></span>
Brain cells begin to die after about 4-6 minutes of no blood flow (the heart beating makes the blood flow) after about 10 minutes without blood flow the cells are dead.
