Your heart is about the size of this object.
What is a fist?
It is the largest vein in your body.
What is the vena cava?
The name for the bottom chambers of the heart.
What are ventricles?
Blood is this color when it carries oxygen.
What is red?
This is the main organ of the circulatory system.
What is the heart?
The left one of these pumps blood to your body.
What is the left ventricle?
These are the smallest blood vessels.
What are capillaries?
What are atriums?
Their purpose is to form blood clots.
What are platelets?
The system that carries materials throughout your body.
What is the circulatory system?
The flap of tissue between each chamber of the heart.
What is a valve?
These blood vessels carry blood away from the heart.
What are arteries?
The fluid that carries materials around the body.
What is blood?
The name for the fluid in the blood.
What is plasma?
The amount of time if takes for your blood to make a complete circle around the inside of your body?
What is one minute?
Blood enters your heart through the right one of these.
What is the right atrium?
These blood vessels carry blood back to the heart.
What are veins?
The organ that pumps blood.
What is the heart?
These blood cells carry oxygen throughout your body.
What are red blood cells?
These connect arteries to veins.
What are capillaries?
The heartbeat sound is caused by these snapping shut.
What are the valves?
It is the largest artery in your body.
What is the aorta?
The colorless fluid in the blood.
What is plasma?
These blood cells help your body fight infection & kill bacteria.
What are white blood cells?
The heart, arteries, veins, & blood.
What are the 4 most important parts of the circulatory system?