1. Atrium
2. Ventricle
3.left ventricle
4. they pump blood throughout the body
5.superior vena cava
6. Pulmonary vein
7.Four heart valves control the flow of blood through the heart. They act as one-way doors, opening to let blood exit or enter a chamber, then closing to keep blood from flowing backward.
Jupiter<span> is made up mostly of trapped helium, hydrogen, and water. In our solar system, the four "gas giants" are </span>Jupiter,Saturn<span>, </span>Neptune<span>, and </span>Uranus<span>. The answer is Jupiter</span>
<span>The trait that is ancestral to all chordates is the presence of a notochord...the others are gill slits and nerve chord</span>
<span>The Left-sided Problem of the heart involves the lack of enough supply of oxygen induced blood and the blood which is unable to reach the heart goes to lungs causing breath issues. Another issue with this problem is that left side of the heart pumps blood into the body, so when it fails, less blood will be pumped into the arteries.</span>
