Truth or Lie: Cardiovascular System Edition

The right side of your heart sends blood to your lungs to pick up oxygen.

Blood in your veins is blue because it’s low in oxygen.

The largest artery in your body is called the aorta.

The heart is about the size of your fist.

The heart is located directly in the center of your chest.

Arteries carry blood away from the heart.

The more you exercise, the fewer beats your heart needs to make to pump the same amount of blood.

The heart’s natural pacemaker is called the sinoatrial (SA) node.

Your pulse is your heart rate, and it can be felt in places like your wrist and neck.

Blood pressure is higher in arteries than in veins.

Capillaries are tiny blood vessels where oxygen is exchanged for carbon dioxide.

Veins have thicker walls than arteries because they carry blood back to the heart.

Your heart takes a break when you hold your breath.

Your heart works non-stop, even while you’re sleeping.

The left ventricle is the strongest chamber of your heart.

The tricuspid valve keeps blood from flowing backward into the right atrium.

The mitral valve is another name for the heart's pacemaker.

The pulmonary artery carries blood from the heart to the lungs.

The heart can rest for a few minutes when you’re lying down.

The heart’s main job is to keep your blood moving around your body.

The average adult heart beats about 60-100 times per minute.

The right side of the heart is responsible for pumping blood to your toes and fingers.

Blood in the arteries is usually bright red because it’s full of oxygen.

The left side of the heart is responsible for pumping oxygen-rich blood to the entire body.

The pericardium is a protective sac that surrounds your heart.

White blood cells are responsible for carrying oxygen throughout your body.

Your heart’s electrical system controls how fast it beats.

The heart pumps blood directly into your stomach to help digest food.

Your heart can skip a beat when you’re excited or nervous.

The heart is a muscle that gets stronger with regular exercise.

The left ventricle pumps oxygen-rich blood into the aorta, which carries it to the rest of your body.

The superior vena cava carries oxygen-rich blood from the lungs to the heart.

The heart’s valves act like doors, opening and closing to keep blood flowing in the right direction.

Blood is blue until it gets oxygen from your lungs.

The blood in your arteries flows at a higher pressure than in your veins.

The heart can generate its own electrical impulses, even outside of the body.

Your heart beats faster when you’re lying down than when you’re standing up.

The heart rate of a fit person is usually lower at rest than that of an unfit person.

The left side of the heart is stronger because it pumps blood to the entire body.

The sound of your heartbeat is caused by the valves in your heart closing.

Your heart can continue to beat for a short time even after being removed from the body.

All veins carry oxygen-rich blood, and all arteries carry oxygen-poor blood.