Answer:
The heart consists of four chambers in which blood flows. Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle. The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body.
CALCIUM strengthens your bones
(☞ﾟヮﾟ)☞ Pero que hermosa ☜(ﾟヮﾟ☜)
Responsible friends would never engage you in risky behaviours, especially in sexual ones. Responsible friends are most likely not to do this kind of things, but you also have to be responsible.
Hope it helped,
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