Which component of the blood is primarily responsible for fighting infections and attacking germs that enter the body?

Which type of blood vessel is responsible for carrying oxygen-rich blood away from the heart to the rest of the body?

Which component of the blood is responsible for clotting to stop bleeding when you get a cut?

Which chamber of the heart is responsible for pumping oxygenated blood to the entire body through the aorta?

Which specific blood group is known as the "universal donor" because it can be safely given to people of any other blood group?

Which tiny blood vessels have extremely thin walls to allow oxygen, nutrients, and waste products to pass between the blood and the body's cells?

What is the primary function of the red blood cells within the circulatory system?

The constant rhythmic contraction and relaxation of the heart muscles is felt as a heartbeat. Which medical instrument do doctors use to listen to these sounds?

Which specific blood vessel carries blood from the heart to the lungs to pick up oxygen and release carbon dioxide?

Which component of the blood is a yellowish liquid that makes up about 55% of the total blood volume and carries nutrients, hormones, and proteins throughout the body?