Exploring the Human Circulatory System

What is the main function of the circulatory system?

• To produce hormones for the body.

• To filter toxins from the blood.

• To transport blood and essential substances throughout the body.

• To regulate body temperature.

What organ pumps blood throughout the body?

• Lungs

• Kidneys

• Liver

• Heart

What are the two main types of blood vessels?

• Capillaries and arteries

• Veins and lymphatics

• Arteries and capillaries

• Arteries and veins

What is the largest artery in the body?

• femoral artery

• aorta

• pulmonary artery

• coronary artery

What is the role of red blood cells?

• The role of red blood cells is to transport oxygen and carbon dioxide in the bloodstream.

• To fight infections in the body.

• To store nutrients in the liver.

• To produce insulin in the pancreas.

What substance do red blood cells carry?

• Nitrogen

• Oxygen

• Carbon dioxide

• Glucose

What is the function of white blood cells?

• To produce hormones for growth and metabolism.

• To break down food in the digestive system.

• The function of white blood cells is to protect the body against infections and foreign invaders.

• To transport oxygen throughout the body.

What is the name of the liquid component of blood?

• white blood cells

• serum

• plasma

• red blood cells

How many chambers does the human heart have?

• 4

• 2

• 5

• 3

What is the name of the valve that prevents backflow in the heart?

• Pulmonary valve

• Atrioventricular valve

• Aortic valve

• Semilunar valve