Heart

How many chambers does the human heart have?

Hint: There are two on top and two on the bottom.

What are the two upper chambers of the heart called?

Hint: These chambers receive blood coming into the heart.

What are the two lower chambers of the heart called?

Hint: These chambers pump blood OUT of the heart.

What is the largest artery in the body that carries oxygen-rich blood from the left ventricle?

Hint: It arches up and then curves down, branching to supply the whole body.

Which side of the heart pumps blood to the lungs?

Hint: Blood needs to pick up oxygen from the lungs before going to the rest of the body.

What is the function of heart valves?

Hint: They open and close with each heartbeat, making the 'lub-dub' sound.

What blood vessel carries oxygen-poor blood from the body back to the right atrium?

Hint: There is one from the upper body (superior) and one from the lower body (inferior).

Which blood vessels carry oxygen-rich blood FROM the lungs back to the left atrium?

Hint: These are unusual veins because they carry oxygenated blood, not deoxygenated.

What is the correct path of blood flow through the heart?

Hint: Deoxygenated blood enters the right side first, goes to the lungs, then returns to the left side.

Which chamber of the heart has the thickest muscular wall?

Hint: It must pump blood to the entire body, not just the nearby lungs.

What is the wall of tissue that separates the left and right sides of the heart?

Hint: The same word is used for the wall between your nostrils.

What is the 'lub-dub' sound of a heartbeat caused by?

Hint: The first sound is two valves closing, then the second sound is two more valves closing.