Answer:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. The pulmonary vein empties oxygen-rich blood, from the lungs into the left atrium.
Explanation:
hope this helps...
and if u didn't get it its veins...
False because they could get injured because they aren’t conditioned for it.
The person you are sharing them with may be sick or have something and by sharing those they could pass it onto you