Which is top and which is bottom

the top is the crust and the bottom is the triangle ofc

Explanation:

bc ofc

here's your

hope it

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 of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.